Relax pytz dependency constraint

[MicahLyle]

Describe the bug

This isn't a bug per-say, but pytz is pinned to < 2022. This means that I can't use pyuploadcare alongside my code library if I want pytz >= 2022.

The conflict is caused by:
    The user requested pytz==2022.2
    pyuploadcare 3.0.0 depends on pytz<2022.0 and >=2021.1

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

Expected behavior

The pyuploadcare library should work with later pytz versions as well, so that we can have up to date timezone definitions even if pyuploadcare hasn't needed a release in a while.

[MicahLyle]

Would also be nice if typing-extensions version could be bumped at the next release.

[dmitry-mukhin]

closed via #210