updated peer review workflow

What's Changed

Major changes include an overhauled peer review workflow, and the beginnings of an ML-supported tag clustering curator workflow from @hwelsters

various refactoring of the backend and system upgrades including a major version bump to Django 4.2 LTS

Relevant PRs

• Refactor core/home app views and serializers by @sgfost in #663
• feat: tag clustering using ML by @hwelsters in #673
• peer review: draft workflow, closing, invitation expirations by @sgfost in #667
• build(deps): upgrade to django 4.2 LTS by @alee in #670

New Contributors

• @hwelsters made their first contribution in #673

Full Changelog: v2023.08...v2023.10