Update minimum Python version to 3.9 in the configuration

[OlenaYefymenko]

🍒Update minimum Python version to 3.9 in the configuration

Resolves #136

[cpython-cla-bot]

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[hugovk]

Thanks for the PR!

There's some linting to fix.

Please could you run:

python -m pip install pre-commit
pre-commit run --all-files

Or if you use uv, something like this:

uvx pre-commit run --all-files

And commit the changed file?

[OlenaYefymenko]

Thanks for the PR!

There's some linting to fix.

Please could you run:

python -m pip install pre-commit
pre-commit run --all-files

Or if you use uv, something like this:

uvx pre-commit run --all-files

And commit the changed file?

Thank you for the feedback!
Yes, I can run pre-commit tool
Please advise, should I make changes for test_cherry_picker.py within this PR, or is it better to open a new PR?
I worry about atomic, this is formatted changes and not connected with the Python version.

[zware]

IIUC the formatting changes are a direct result of no longer supporting 3.8, so I think it's fine to include them here.

Separately, it looks like the pre-commit configuration could stand an update (which should be a separate PR :))

[OlenaYefymenko]

IIUC the formatting changes are a direct result of no longer supporting 3.8, so I think it's fine to include them here.

Separately, it looks like the pre-commit configuration could stand an update (which should be a separate PR :))

Thank you for pointing, I added this change.

[hugovk]

Thank you for your contribution! 🎃🍒

[webknjaz]

@hugovk perhaps, somebody has to enable the pre-commit.ci app for this repo, eh?

[hugovk]

Good idea, I sent a request via https://pre-commit.ci/ to enable this repo. @JacobCoffee, please can you accept it?

[JacobCoffee]

@hugovk done

[hugovk]

Thanks!