update workflow

Author: JoeWang1127

.github/workflows/golang.yaml

@@ -22,7 +22,7 @@ jobs:
     # Presubmit jobs must complete within 5 minutes. See CONTRIBUTING.md.
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
           go-version-file: "go.mod"