Merge pull request #149 from PHPCSStandards/feature/ghactions-update-actions

GH Actions: use actions/checkout@v4

Author: jrfnl

.github/workflows/test-ghpages.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1