chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/go.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Go 1.22
         uses: actions/setup-go@v6
         with: