Auto Publish to PyPi Failed (#259)

* no test pypi on publish

Author: ssolson

.github/workflows/pypi.yml

@@ -28,12 +28,13 @@ jobs:
       - run: python -m build --sdist --wheel --outdir dist/ .
 
       - name: Upload to Test PyPI
-        if: github.repository_owner == 'MHKiT-Software'
+        if: github.event_name != 'release' && github.repository_owner == 'MHKiT-Software'
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: __token__
           password: ${{ secrets.TEST_PYPI_API_TOKEN }}
           repository-url: https://test.pypi.org/legacy/
+          skip-existing: true
 
       - name: Upload to PyPI (tagged release only)
         if: