Update python-publish.yml

.github/workflows/python-publish.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install twine flake8
+        pip install twine flake8 Cython
     - name: Lint with flake8 for syntax errors
       run: |
         pip install flake8