ci: refactor GitHub Actions workflows

- Reorganize the setup steps for Go in the GitHub Actions workflow

Signed-off-by: Bo-Yi Wu <[email protected]>

.github/workflows/go.yml

@@ -42,16 +42,16 @@ jobs:
       GO111MODULE: on
       GOPROXY: https://proxy.golang.org
     steps:
-      - name: Set up Go ${{ matrix.go }}
-        uses: actions/setup-go@v5
-        with:
-          go-version: ${{ matrix.go }}
-
       - name: Checkout Code
         uses: actions/checkout@v4
         with:
           ref: ${{ github.ref }}
 
+      - name: Set up Go ${{ matrix.go }}
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go }}
+
       - uses: actions/cache@v4
         with:
           path: |