Part 8: Support New Python ver <3.12 and Update FastAPI

[jncabelin]

• updated fastapi version
• updated support for python >=3.8, <12
• updated pydantic
• updated project references
• updated 'orm_mode' to 'from_attributes', 'example' to 'examples'
• updated alembic \ env.py

[ChristopherGS]

@jncabelin the upgrade of SQLAlchemy is one of the biggest changes - have you checked the DB saving works OK?