Update github actions

Author: Inbal Tako

.github/workflows/ci.yml

@@ -26,8 +26,8 @@ jobs:
     - name: Publish a Python distribution to PyPI
       uses: pypa/gh-action-pypi-publish@master
       with:
-        user: __token__
-        password: ${{ secrets.pypi_password }}
+        user: ${{ secrets.PYPI_USER }}
+        password: ${{ secrets.PYPI_PASSWORD }}
 
     - name: Run Tests
       run: python -m unittest