drop support for unsupported python versions

[onerandomusername]

We should drop python 3.8 support and potentially 3.9 as well.

Most of our tools don't support 3.8 anymore anyhow. There is no gain to be had for supporting python 3.8, as I don't believe many of our users still use 3.8.

[Enegg]

3.10 type unions lets go
and no typing.List masquerade