add working-directory: python to publish script

Author: Xiao Li

.github/workflows/python-publish.yml

@@ -27,7 +27,7 @@ jobs:
       env:
         TWINE_USERNAME: __token__
         TWINE_PASSWORD: ${{ secrets.PYPI_PUBLISH_API_TOKEN }}
+      working-directory: python
       run: |
-        cd python
         python setup.py sdist bdist_wheel
         twine upload dist/*