ci: fix ci deprecations, add PHP 8.4 testruns

.github/workflows/tests.yml

@@ -13,13 +13,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
+        php: ['7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
         setup: ['lowest', 'stable', 'next', 'no-calendar']
 
     name: PHP ${{ matrix.php }} - ${{ matrix.setup }}
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2
@@ -36,7 +36,7 @@ jobs:
 
     - name: Cache Composer packages
       id: composer-cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: vendor
         key: ${{ runner.os }}-${{ matrix.setup }}-v4-php-${{ matrix.php }}-${{ hashFiles('**/composer.json') }}
@@ -93,7 +93,7 @@ jobs:
     name: Multitest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -104,7 +104,7 @@ jobs:
 
       - name: Cache Composer packages
         id: composer-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: vendor
           key: ${{ runner.os }}-php-multi-${{ matrix.php }}-${{ hashFiles('**/composer.lock') }}