ci: refactor CI workflow and improve tests

- Update the golangci-lint action version from `v4` to `v5` in the GitHub workflow for Go.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

Author: appleboy

.github/workflows/go.yml

@@ -23,7 +23,7 @@ jobs:
           go-version-file: go.mod
           check-latest: true
       - name: Setup golangci-lint
-        uses: golangci/golangci-lint-action@v4
+        uses: golangci/golangci-lint-action@v5
         with:
           args: --verbose
   test: