fix(ci): update golangci-lint import path to v2

Update the import path for golangci-lint in GitHub workflows to use
the v2 version of the package instead of the previous version.

Author: nametake

.github/workflows/go.yaml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
       - name: Install golangci-lint
-        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+        run: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
       - name: Run test
         run: go test ./...
   golangci-lint:
@@ -28,6 +28,6 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
       - name: Install golangci-lint
-        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+        run: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
       - name: Run golangci-lint
         run: golangci-lint run