ci(lint): show nice error on lint failure

Prints a nice error on GitHub Actions if `pnpm run lint` fails.

.github/workflows/lint.yml

@@ -37,7 +37,20 @@ jobs:
           CYPRESS_CACHE_FOLDER: .cache/Cypress
 
       - name: Run Linting
-        run: pnpm run lint
+        shell: bash
+        run: |
+          if ! pnpm run lint; then
+              # print a nice error message on lint failure
+              ERROR_MESSAGE='Running `pnpm run lint` failed.'
+              ERROR_MESSAGE+=' Running `pnpm run lint:fix` may fix this issue. '
+              ERROR_MESSAGE+=" If this error doesn't occur on your local machine,"
+              ERROR_MESSAGE+=' make sure your packages are up-to-date by running `pnpm install`.'
+              ERROR_MESSAGE+=' You may also need to delete your prettier cache by running'
+              ERROR_MESSAGE+=' `rm ./node_modules/.cache/prettier/.prettier-cache`.'
+              echo "::error title=Lint failure::${ERROR_MESSAGE}"
+              # make sure to return an error exitcode so that GitHub actions shows a red-cross
+              exit 1
+          fi
 
       - name: Verify Docs
         id: verifyDocs