ci: bump actions

Author: JaZo

.github/workflows/codestyle.yml

@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Check style
         uses: docker://oskarstark/php-cs-fixer-ga

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # Fetch 10 commits or Scrutinizer will throw
           fetch-depth: 10
@@ -33,7 +33,7 @@ jobs:
         run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: php-${{ matrix.php }}-composer-${{ matrix.stability }}-${{ hashFiles('**/composer.json') }}