chore: Update actions/checkout to v4 for integ-tests (#623)

Author: guikcd

.github/workflows/test-workflow.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Print current build ID
       run: |