current min Python is 3.8 --> update to 3.11

[jGaboardi]

The current minimal supported Python is 3.8¹². This still passing, but should we update to Python 3.11 to follow with SPEC0?

I'd like to put in a PR if so.

Footnotes

1. pyproject.toml ↩

2. ci/envs/minimal.yaml ↩

[martinfleis]

I don't think it hurts to support more if there's no additional cost of doing so. But sticking to 3.8 might not be needed :). Not sure if a PR will make any difference. I don't have plans or a need for a release now so it would not propagate for a while.