build: [#535] allow gomod-go-version-updater action to trigger golang…

… action to test whether go version update works

.github/workflows/golang.yml

@@ -3,6 +3,7 @@ name: Golang
 'on': push
 jobs:
   mcvs-golang-action:
+    if: ${{ github.event.label.name == 'label_name123' }}
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/[email protected]