Backport several GitHub Action workflow improvements to wp/trunk

.github/workflows/build-plugin-zip.yml

@@ -22,6 +22,7 @@ jobs:
         name: Bump version
         runs-on: ubuntu-latest
         if: |
+            github.repository == 'WordPress/gutenberg' &&
             github.event_name == 'workflow_dispatch' &&
             github.ref == 'refs/heads/trunk' && (
               github.event.inputs.version == 'rc' ||
@@ -110,26 +111,25 @@ jobs:
         name: Build Release Artifact
         runs-on: ubuntu-latest
         needs: bump-version
-        if: always()
+        if: ${{ ( github.repository == 'WordPress/gutenberg' && always() ) || ( github.event_name == 'pull_request' && always() ) }}
+
         steps:
             - name: Checkout code
               uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
               with:
                   ref: ${{ needs.bump-version.outputs.release_branch || github.ref }}
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: 14
 
-            - name: Cache node modules
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
-              env:
-                  cache-name: cache-node-modules
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   # npm cache files are stored in `~/.npm` on Linux/macOS
                   path: ~/.npm
-                  key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+                  key: ${{ runner.os }}-node-14-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - name: Build Gutenberg plugin ZIP file
               run: ./bin/build-plugin-zip.sh
@@ -169,6 +169,8 @@ jobs:
         name: Create Release Draft and Attach Asset
         needs: [bump-version, build]
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
+
         steps:
             - name: Set Release Version
               id: get_release_version

.github/workflows/bundle-size.yml

@@ -1,6 +1,28 @@
 name: Compressed Size
 
-on: [pull_request]
+on:
+    pull_request:
+        paths:
+            # Any change to a CSS, Sass, or JavaScript file should run checks.
+            - '**.js'
+            - '**.css'
+            - '**.scss'
+            # Changes to any NPM related files could affect the outcome.
+            - '**package*.json'
+            # These files configures ESLint. Changes could affect the outcome.
+            - '**.eslint*'
+            # These files configures JSHint. Changes could affect the outcome.
+            - '**.jshint*'
+            # These files configures Prettier. Changes could affect the outcome.
+            - '**.prettier*'
+            # These files configures stylelint. Changes could affect the outcome.
+            - '**.stylelint*'
+            # These files configures TypeScript. Changes could affect the outcome.
+            - '**.tsconfig*'
+            # This file configures Webpack. Changes could affect the outcome.
+            - 'webpack.config.js'
+            # Changes to this workflow file should always verify the changes are successful.
+            - '.github/workflows/bundle-size.yml'
 
 # Cancels all previous workflow runs for pull requests that have not completed.
 concurrency:
@@ -13,16 +35,25 @@ jobs:
     build:
         name: Check
         runs-on: ubuntu-latest
-
+        strategy:
+            matrix:
+                node: ['14']
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
               with:
                   fetch-depth: 1
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: ${{ matrix.node }}
+
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
+              with:
+                  # npm cache files are stored in `~/.npm` on Linux/macOS
+                  path: ~/.npm
+                  key: ${{ runner.os }}-node-${{ matrix.node }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - uses: preactjs/compressed-size-action@7d87f60a6b0c7d193b8183ce859ed00b356ea92f # v2.1.0
               with:

.github/workflows/create-block.yml

@@ -16,27 +16,26 @@ jobs:
     checks:
         name: Checks
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
         strategy:
             fail-fast: false
             matrix:
-                node: [12, 14]
+                node: ['12', '14']
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
 
-            - name: Use Node.js ${{ matrix.node }}.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
                   node-version: ${{ matrix.node }}
 
-            - name: Cache node modules
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
-              env:
-                  cache-name: cache-node-modules-${{ matrix.node }}
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   # npm cache files are stored in `~/.npm` on Linux/macOS
                   path: ~/.npm
-                  key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+                  key: ${{ runner.os }}-node-${{ matrix.node }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - name: npm install, build, format and lint
               run: |

.github/workflows/end2end-test.yml

@@ -18,30 +18,28 @@ concurrency:
 jobs:
     admin:
         name: Admin - ${{ matrix.part }}
-
         runs-on: ubuntu-latest
-
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
         strategy:
             fail-fast: false
             matrix:
                 part: [1, 2, 3, 4]
+                node: ['14']
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: ${{ matrix.node }}
 
-            - name: Cache node modules
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
-              env:
-                  cache-name: cache-node-modules
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   # npm cache files are stored in `~/.npm` on Linux/macOS
                   path: ~/.npm
-                  key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+                  key: ${{ runner.os }}-node-${{ matrix.node }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - name: Npm install and build
               run: |

.github/workflows/performance.yml

@@ -15,25 +15,23 @@ concurrency:
 jobs:
     performance:
         name: Run performance tests
-
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: 14
 
-            - name: Cache node modules
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
-              env:
-                  cache-name: cache-node-modules
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   # npm cache files are stored in `~/.npm` on Linux/macOS
                   path: ~/.npm
-                  key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+                  key: ${{ runner.os }}-node-14-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - name: Npm install
               run: |

.github/workflows/pull-request-automation.yml

@@ -7,21 +7,35 @@ name: Pull request automation
 jobs:
     pull-request-automation:
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
+        strategy:
+            matrix:
+                node: ['14']
+
         steps:
             # Checkout defaults to using the branch which triggered the event, which
             # isn't necessarily `trunk` (e.g. in the case of a merge).
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
               with:
                   ref: trunk
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: ${{ matrix.node }}
+
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
+              with:
+                  # npm cache files are stored in `~/.npm` on Linux/macOS
+                  path: ~/.npm
+                  key: ${{ runner.os }}-node-${{ matrix.node }}-npm-pr-automation-cache-${{ hashFiles('**/package-lock.json') }}
 
             # Changing into the action's directory and running `npm install` is much
             # faster than a full project-wide `npm ci`.
-            - run: cd packages/project-management-automation && npm install
+            - name: Install NPM dependencies
+              run: npm install
+              working-directory: packages/project-management-automation
 
             - uses: ./packages/project-management-automation
               with:

.github/workflows/rnmobile-android-runner.yml

@@ -21,26 +21,28 @@ jobs:
         strategy:
             matrix:
                 native-test-name: [gutenberg-editor-initial-html]
+                node: ['14']
 
         steps:
             - name: checkout
               uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: ${{ matrix.node }}
 
-            - name: Restore npm cache
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
+                  # npm cache files are stored in `~/.npm` on Linux/macOS
                   path: ~/.npm
-                  key: ${{ runner.os }}-npm-${{ hashFiles('package-lock.json') }}
+                  key: ${{ runner.os }}-node-${{ matrix.node }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - run: npm ci
 
             - name: Restore Gradle cache
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   path: ~/.gradle/caches
                   key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}

.github/workflows/rnmobile-ios-runner.yml

@@ -15,40 +15,43 @@ concurrency:
 jobs:
     test:
         runs-on: macos-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
         strategy:
             matrix:
                 xcode: [12.2]
                 native-test-name: [gutenberg-editor-initial-html]
+                node: ['14']
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: ${{ matrix.node }}
 
-            - name: Restore npm cache
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
+                  # npm cache files are stored in `~/.npm` on Linux/macOS
                   path: ~/.npm
-                  key: ${{ runner.os }}-npm-${{ hashFiles('package-lock.json') }}
+                  key: ${{ runner.os }}-node-${{ matrix.node }}-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - run: npm ci
 
             - name: Prepare build cache key
               run: find package-lock.json packages/react-native-editor/ios packages/react-native-aztec/ios packages/react-native-bridge/ios -type f -print0 | sort -z | xargs -0 shasum | tee ios-checksums.txt
 
             - name: Restore build cache
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   path: |
                       packages/react-native-editor/ios/build/GutenbergDemo/Build/Products/Release-iphonesimulator/GutenbergDemo.app
                       packages/react-native-editor/ios/build/WDA
                   key: ${{ runner.os }}-ios-build-${{ matrix.xcode }}-${{ hashFiles('ios-checksums.txt') }}
 
             - name: Restore pods cache
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   path: |
                       packages/react-native-editor/ios/Pods

.github/workflows/stale-issue-add-needs-testing.yml

@@ -6,6 +6,7 @@ on:
 jobs:
     stale:
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
         steps:
             - uses: actions/stale@996798eb71ef485dc4c7b4d3285842d714040c4a # v3.0.17
               with:

.github/workflows/stale-issue-mark-stale.yml

@@ -6,6 +6,7 @@ on:
 jobs:
     stale:
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
         steps:
             - uses: actions/stale@996798eb71ef485dc4c7b4d3285842d714040c4a # v3.0.17
               with:

.github/workflows/stale-issue-needs-info.yml

@@ -6,6 +6,7 @@ on:
 jobs:
     stale:
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' }}
         steps:
             - uses: actions/stale@996798eb71ef485dc4c7b4d3285842d714040c4a # v3.0.17
               with:

.github/workflows/static-checks.yml

@@ -18,25 +18,23 @@ concurrency:
 jobs:
     check:
         name: All
-
         runs-on: ubuntu-latest
+        if: ${{ github.repository == 'WordPress/gutenberg' || github.event_name == 'pull_request' }}
 
         steps:
             - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
 
-            - name: Use Node.js 14.x
+            - name: Use desired version of NodeJS
               uses: actions/setup-node@46071b5c7a2e0c34e49c3cb8a0e792e86e18d5ea # v2.1.5
               with:
-                  node-version: 14.x
+                  node-version: 14
 
-            - name: Cache node modules
-              uses: actions/cache@26968a09c0ea4f3e233fdddbafd1166051a095f6 # v2.1.4
-              env:
-                  cache-name: cache-node-modules
+            - name: Cache NPM packages
+              uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
               with:
                   # npm cache files are stored in `~/.npm` on Linux/macOS
                   path: ~/.npm
-                  key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+                  key: ${{ runner.os }}-node-14-npm-cache-${{ hashFiles('**/package-lock.json') }}
 
             - name: Npm install and build
               # A "full" install is executed, since `npm ci` does not always exit