ci: Build nightly only on current branch

* We will use this branch for Grafana teams to make review

Signed-off-by: Mahendra Paipuri <[email protected]>

.github/workflows/ci.yml

@@ -86,7 +86,9 @@ jobs:
       - name: Release nightly
         uses: softprops/action-gh-release@v1
         # Run this only when there is a PR merged or on main branch
-        if: github.event.pull_request.merged || github.ref == 'refs/heads/main'
+        # if: github.event.pull_request.merged || github.ref == 'refs/heads/main'
+        # Run this only on grafana_labs_review branch for Grafana team to review plugin
+        if: github.ref == 'refs/heads/grafana_labs_review'
         with:
           prerelease: true
           name: nightly