Switch PyPI packages to using Github Actions and relying on OIDC identities

[shaidar]

Description/Context

Switch PyPI packages to using Github Actions and relying on OIDC identities in place of hardcoded secrets. The steps are outlined here

Plan/Design

• Identify all the packages that we upload to PyPI
• Add a trusted publisher to an existing PyPI project
• Create or modify the existing Github action to use OIDC

[feoh]

Hey I built this for Anastasia's ai tutor!

You can steal my GH action from here:

https://github.com/mitodl/open-learning-ai-tutor/blob/main/.github/workflows/publish.yml