Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/swiftfiddle-runner-functions-61-AutoDeployTrigger-ac5a90f2-3d17-4e6b-ab89-f38aa6385497.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout to the branch
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Azure Login
         uses: azure/login@v1