Skip existing wheel while publishing (#125)

Author: martinRenou

.github/workflows/build_wheel.yml

@@ -248,4 +248,4 @@ jobs:
       env:
         TWINE_USERNAME: __token__
         TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
-      run: twine upload wheelhouse/xeus_python-*.whl
+      run: twine upload --skip-existing wheelhouse/xeus_python-*.whl