Bump actions/cache from 3 to 4 (#17)

Author: dependabot[bot]

.github/workflows/test-coding-standards.yml

@@ -49,7 +49,7 @@ jobs:
         run: echo "COMPOSER_CACHE_FILES_DIR=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.COMPOSER_CACHE_FILES_DIR }}
           key: composer-${{ matrix.php-version }}-${{ hashFiles('**/composer.*') }}

.github/workflows/test-phpstan.yml

@@ -49,7 +49,7 @@ jobs:
         run: echo "COMPOSER_CACHE_FILES_DIR=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.COMPOSER_CACHE_FILES_DIR }}
           key: composer-${{ matrix.php-version }}-${{ hashFiles('**/composer.*') }}
@@ -61,7 +61,7 @@ jobs:
         run: mkdir --parents build/phpstan
 
       - name: Cache PHPStan cache directory
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: build/phpstan
           key: phpstan-${{ github.sha }}

.github/workflows/test-phpunit.yml

@@ -49,7 +49,7 @@ jobs:
         run: echo "COMPOSER_CACHE_FILES_DIR=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.COMPOSER_CACHE_FILES_DIR }}
           key: composer-${{ matrix.php-version }}-${{ hashFiles('**/composer.*') }}