Bump dependencies

[Jackenmen]

Description of the changes

This PR does a few things:

• drops aiodns dependency
  • While aiohttp does have an aiodns implementation, it has been
    disabling it unconditionally for the last 8 years:
    aio-libs/aiohttp@9fbb7d7
• bumps all dependencies before release as usual
  • this doesn't include Black 24 bump which affects code style
  • this required setting an upper-bound for pytest-asyncio to 0.21.* (+ pytest <8 due to incompatibility) - there is a known issue with 0.23.* on the upstream side for now
• updates scripts for generating dependency lists to consider differences between Python versions

Have the changes in this PR been tested?

Partially yes, see results:

Test run of updated install instructions:

• macOS x86_64 12 and 13 (14 on GitHub is M1 so same as Cirrus CI): https://github.com/Jackenmen/Red-Install-Tests/actions/runs/8369137984
• everything else: https://cirrus-ci.com/build/4744265834692608

[Jackenmen]

Alright, I figured it out, it had nothing to do with asyncpg and everything to do with the testing framework (or more specifically, pytest-asyncio plugin). I added an upper-bound for relevant packages and we can reevaluate it in the future since it's classified as an upstream issue.

[Flame442]

Technically it isn't against our version guarantees, but removing dependencies has the potential to break 3rd party cogs. pytz is currently used by at least Trusty and Aika, though both include it in requirements.txt. I didn't do a super exhaustive search, so I don't know if there are others that don't explicitly include it. If that isn't something we are worried about, this can be merged.