Publish to test TestPyPI before publishing to PyPI

[blink1073]

Workflow run from this branch using test pypi: https://github.com/mongodb-labs/django-mongodb-backend/actions/runs/12830580385

[Jibola]

could you also remove this old reference to the test pypi API as well? It's on line 116 of the changed file.
repository_url: https://test.pypi.org/legacy/

[blink1073]

Done

[Jibola]

I don't see the change reflected in the PR yet.

[blink1073]

Pushed to the wrong remote. 🤦🏼

[Jibola]

I don't see the Line 116 removal, but overall LGTM.

[Jibola]

I don't see the change reflected in the PR yet.

[blink1073]

Sweet, I ran a second time and I get:

Uploading django_mongodb_backend-5.0.0a4.dev0-py3-none-any.whl
Uploading django_mongodb_backend-5.0.0a4.dev0.tar.gz
WARNING  Skipping django_mongodb_backend-5.0.0a4.dev0.tar.gz because it appears 
         to already exist