Update GitHub Actions

Author: collimarco

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Validate composer.json
       run: composer validate --strict
     - name: Install dependencies