Merge pull request #188 from w3bdesign/renovate/actions-checkout-4.x

Update actions/checkout action to v4

Author: w3bdesign

.github/workflows/phpcs.yml

@@ -6,7 +6,7 @@ jobs:
     name: Run PHPCS inspection
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: ${{ github.event.pull_request.head.sha }}
     - name: Run PHPCS inspection