Update release.yml

Author: egil

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
     name: 🎁 Publish new release
     # Only run on manual dispatch or on merged 'release-' pull requests
     if: github.ref == 'refs/heads/stable' || 
-        github.event.pull_request.merged == true && startsWith(github.ref, 'refs/heads/release/v') == true
+        github.event.pull_request.merged == true && startsWith(github.head_ref, 'refs/heads/release/v') == true
     runs-on: ubuntu-latest
     steps: