Update actions/checkout action to v4

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
       with:
         go-version: 1.17.x
     - name: Checkout code
-      uses: actions/checkout@v3.0.2
+      uses: actions/checkout@v4.1.7
     - name: Test
       run: |
         go test ./... -coverprofile=profile.cov