[v2] Pyproject.toml minimum Python version is too low

[Nemec]

Describe your suggested feature

So it looks like typing.Self (used here) is added in Python 3.11 but your current pyproject.toml in the V2 branch specifies Python 3.8 as the minimum version. I was able to successfully install after installing Python 3.11 in a venv. Not a huge issue, but before you release 2.0 you'll probably want to bump this version in pyproject.toml

https://docs.python.org/3/library/typing.html#typing.Self

Checklist

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