only publish if tags are pushed

Author: gboeing

.github/workflows/build-publish-pypi.yml

@@ -11,7 +11,6 @@ on:
       - 'v*'
   schedule:
     - cron: "40 4 * * 1" # every monday at 04:40 UTC
-  workflow_dispatch:
 
 jobs:
   build_publish_pypi:
@@ -43,5 +42,5 @@ jobs:
           python -m twine check --strict ./dist/*
 
       - name: Publish package to PyPI
-        if: ${{ github.event_name != 'schedule' }}
+        if: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags') }}
         uses: pypa/gh-action-pypi-publish@release/v1