chore(deps): update python docker tag to v3.12.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
python		minor	3.11.5 -> 3.12.0
python	final	minor	3.11.5-slim-bullseye -> 3.12.0-slim-bullseye

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[massongit]

https://github.com/dev-hato/hato-bot/actions/runs/6440633116/job/17489634669?pr=3319

[pipenv.exceptions.InstallError]:       aiohttp/_websocket.c:3744:45: error: ‘PyLongObject’ {aka ‘struct _longobject’} has no member named ‘ob_digit’
[pipenv.exceptions.InstallError]:        3744 |     const digit* digits = ((PyLongObject*)b)->ob_digit;
[pipenv.exceptions.InstallError]:             |                                             ^~
[pipenv.exceptions.InstallError]:       error: command '/usr/bin/gcc' failed with exit code 1

discord.py が依存している aiohttp のインストールで落ちている。
それに対する修正 nodejs/llhttp#254, aio-libs/aiohttp#7647 ( aio-libs/aiohttp#7648 ) が取り込まれたバージョン3.8.6がリリースされれば解消できるはず: aio-libs/aiohttp#7668

[massongit]

aiohttp のPython 3.12対応は3.9.0になる見通し？: aio-libs/aiohttp#7639 (comment)

[renovate]

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