ci: Improve Golang code quality with updated lint configuration file (#307)

* refactor: Optimize code logic and reduce nesting.

* ci: Improve Golang code quality with updated configuration file

* chore: Update GitHub actions setup-go to version 5 and optimize caching.

.github/workflows/unittest.yml

@@ -14,13 +14,15 @@ jobs:
         platform: [ubuntu-latest]
     runs-on: ${{ matrix.platform }}
     steps:
-      - name: Install Go
-        if: success()
-        uses: actions/setup-go@v4
-        with:
-          go-version: ${{ matrix.go-version }}
       - name: Checkout code
         uses: actions/checkout@v4
+
+      - name: Install Go
+        if: success()
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+
       - name: Run tests
         run: go test -v ./... -covermode=count
 
@@ -29,7 +31,7 @@ jobs:
     steps:
       - name: Install Go
         if: success()
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: "1.21.x"
       - name: Checkout code