CI: Use the main pypi repository instead of testpypi

Author: philomath213

.github/workflows/publish_wheels.yml

@@ -58,4 +58,4 @@ jobs:
         env:
           TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
           TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
-        run: twine upload --repository testpypi --skip-existing --verbose wheelhouse/*.whl
+        run: twine upload --repository pypi --skip-existing --verbose wheelhouse/*.whl