Add Static Security Analysis of GitHub Actions Workflows

[Bibo-Joshi]

Inspired by

• https://blog.pypi.org/posts/2024-12-11-ultralytics-attack-analysis/
• https://blog.yossarian.net/2024/12/06/zizmor-ultralytics-injection
• https://adnanthekhan.com/2024/05/06/the-monsters-in-your-build-cache-github-actions-cache-poisoning/

Edit:

1. I tested that the modified pypi release workflows still work correctly
2. I decided to set up a workflow for this instead of using pre-commit because
   1. this enables to use the online audits
   2. workflows are rarely updated so that adding a pre-commit hook for that seems like an unnecessary additional install step on local end to me
3. As far as I see, dependabot is able to update actions that are pinned with a sha

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.