[ci/cd] correct filter for tag

.github/workflows/pythonpackage.yml

@@ -61,7 +61,7 @@ jobs:
               run: |
                   python setup.py sdist bdist_wheel
             - name: pypi-publish
-              if: startsWith(github.event.ref, 'refs/tags')
+              if: github.event_name == 'create' && github.event.ref_type == 'tag'
               uses: pypa/gh-action-pypi-publish@master
               with:
                   user: __token__