remove deprecations in workflow

Author: koertho

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
           php-version: 8.2
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install the dependencies
         uses: ramsey/composer-install@v3
@@ -30,7 +30,7 @@ jobs:
           php-version: 8.2
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install the dependencies
         uses: ramsey/composer-install@v3
@@ -52,7 +52,7 @@ jobs:
           coverage: none
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           show-progress: false