Update python-publish.yml

Author: ddland

.github/workflows/python-publish.yml

@@ -25,7 +25,7 @@ jobs:
     - name: Build and publish
       env:
         TWINE_USERNAME: __token__
-        TWINE_PASSWORD: ${{ PYPI }}
+        TWINE_PASSWORD: ${{ secrets.PYPI }}
       run: |
         python setup.py sdist bdist_wheel
         twine upload dist/*