Fix wheel artifact path.

.github/workflows/pythonwheels.yml

@@ -63,4 +63,4 @@ jobs:
         env:
           TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
           TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
-        run: twine upload dist/*.whl
+        run: twine upload artifact/*.whl