build: use PYPI_API_TOKEN

Author: thebaptiste

.github/workflows/pythonpublish.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Build and publish
       if: startsWith(github.ref, 'refs/tags/v')
       env:
-        TWINE_USERNAME: PYPI_API_TOKEN
+        TWINE_USERNAME: __token__
         TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
       run: |
         python setup.py sdist bdist_wheel