ci: refine GitHub Actions workflow configuration

- Update the golangci-lint-action version from `v5` to `v6` in the GitHub workflow
- Remove macOS-latest runner and its go-build cache path from the GitHub workflow

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

.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@v5
+        uses: golangci/golangci-lint-action@v6
         with:
           version: latest
           args: --verbose
@@ -35,8 +35,6 @@ jobs:
         include:
           - os: ubuntu-latest
             go-build: ~/.cache/go-build
-          - os: macos-latest
-            go-build: ~/Library/Caches/go-build
     name: ${{ matrix.os }} @ Go ${{ matrix.go }}
     runs-on: ${{ matrix.os }}
     env: