actions/checkout v4 => v5

Author: mtmail

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up PHP ${{ matrix.php-version }}
         uses: shivammathur/setup-php@v2