Fixed github action

Author: James Reynolds

.github/workflows/python-package.yml

@@ -43,7 +43,7 @@ jobs:
       - name: Build binary wheel and a source tarball
         run: python setup.py sdist bdist_wheel
       - name: Publish to PyPI
-        uses: pypa/gh-action-pypi-publish@master
+        uses: pypa/gh-action-pypi-publish@release/v1
         with:
           password: ${{ secrets.PYPI_PASSWORD }}
           repository_url: https://upload.pypi.org/legacy/