Python 3.9 support

[ndxmrb]

Fixes #208.

Utilizes from __future__ import annotations and datetime.timezone.utc to keep Python 3.9 supported.
The datetime.UTC alias was added in Python 3.11, so this might have affected 3.10 as well.

Tests pass, albeit test_http_error_old_config_found both fail at first, but always pass on the second try.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.0%. Comparing base (705b1e9) to head (d9b12d4).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #209   +/-   ##
=======================================
  Coverage   100.0%   100.0%           
=======================================
  Files           6        6           
  Lines         266      267    +1     
=======================================
+ Hits          266      267    +1     

Files	Coverage Δ
fastapi_azure_auth/exceptions.py	100.0% <100.0%> (ø)

[JonasKs]

Thanks so much! Could you add python3.9 to the test suite? I think I mistakenly removed those at some point, and never catched it in my self-review of the 5.0-release.

[ndxmrb]

Adding 3.9, sure. 3.10 is also missing, shall I add it too, or do you want to do it in a 3.10 support branch?

[JonasKs]

3.10 is good too😊 Thanks!

[JonasKs]

Thank you so much!! 😊

[JonasKs]

Release triggered here: https://github.com/Intility/fastapi-azure-auth/releases/tag/5.0.1.
Should be on PyPi in a few minutes.

[ndxmrb]

You're welcome! I'm glad to do my part 😊
And thanks for the fast release to PyPI 👍