Merge pull request #32 from PHPCompatibility/dependabot/github_actions/actions/checkout-5

GH Actions: Bump actions/checkout from 4 to 5

Author: jrfnl

.github/workflows/validate.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2