Release 2.1.0

• Dropped support for fastapi < 0.89.1

• Added support to Python 3.12

• Added support to fastapi >= 0.100 (fixes #98)

• Fixed some warnings to enhance support for pydantic 2

• Added py.typed file to package

• [dev] Added tox for multiple dependencies versions testing

• [dev] Splitted testing workflow from type checking workflow

• [dev] Relaxed mypy checking