chore(all): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3.5.3
+      uses: actions/checkout@v4.0.0
 
     - name: Set up Go
       uses: actions/[email protected]