Comment when the release-pypi step is run

Author: hugovk

.github/workflows/pypi-package.yml

@@ -26,6 +26,7 @@ jobs:
   release-pypi:
     name: Publish to PyPI
     environment: release-pypi
+    # Only run for published releases.
     if: github.repository_owner == 'python' && github.event.action == 'published'
     runs-on: ubuntu-latest
     needs: build-package