Bump action versions

.github/workflows/diagnostics.yml

@@ -29,23 +29,23 @@ jobs:
 
     steps:
       - name: Pull source
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup PHP with PECL extension
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
 
       - name: Cache composer cache directory
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         env:
           cache-name: composer-cache-dir-${{ matrix.php }}
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-build-${{ env.cache-name }}
 
       - name: Cache phpcq directory
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         env:
           cache-name: phpcq-${{ matrix.php }}
         with:
@@ -77,7 +77,7 @@ jobs:
         run: ./vendor/bin/phpcq run -v ${{ matrix.output }}
 
       - name: Upload build directory to artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: ${{ success() }} || ${{ failure() }}
         with:
           name: phpcq-builds-php-${{ matrix.php }}