Release notes

2.0.0

Update environment to python 3.11.4
Update packages: fastapi 0.103.0, pytest 7.4.0, sqlalchemy 2.0.19, pydantic >=2
Remove packages no longer used: fastapi-users (replaced by Fief), fastapi-mail
Replace requests package with httpx (offers async support)
User management now done by Fief application