Merge pull request #4 from alexrudy:testpypi-on-tags

Only run testpypi uploads on tags

.github/workflows/pypi-package.yml

@@ -35,7 +35,7 @@ jobs:
   # Upload to Test PyPI on every commit on main.
   release-test-pypi:
     name: Publish in-dev package to test.pypi.org
-    if: github.repository_owner == 'alexrudy' && github.event_name == 'push' && github.ref == 'refs/heads/main'
+    if: github.repository_owner == 'alexrudy' && github.event_name == 'push' && github.ref_type == 'tag'
     environment: test-pypi-release
     runs-on: ubuntu-latest
     needs: build-package