Merge pull request #44 from voku/renovate/actions-checkout-4.x

Update actions/checkout action to v4

Author: voku

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@2.25.5