Update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
         shell: bash
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v7
 
       - name: Setup Go 1.18
         uses: actions/setup-go@v3