Bump dependencies

[Jackenmen]

Description of the changes

Meaningful changes:

• orjson wheels are built for base x86-64 instruction set again
  • Should we back out on dropping support for it considering that this was the only dependency that was causing problems for us?
• the search in sphinx-rtd-theme now works again

Have the changes in this PR been tested?

Yes

macOS x86_64: https://github.com/Jackenmen/Red-Install-Tests/actions/runs/5336827530
Everything else: https://cirrus-ci.com/build/5771016132100096

[Drapersniper]

Should we back out on dropping support for it considering that this was the only dependency that was causing problems for us?

Is it just a temporary thing or have they committed to support it long term? if it's just a temporary thing it probably makes sense to drop it in 3.6.

If it's a long-term support decision then keeping it is beneficial to users.

[Flame442]

No strong feelings on (officially) supporting/not the old instruction set, it affected ~10 people total who spoke up so it's not a wide problem...

[Kowlin]

No hard feelings either way from me regarding Orjson's changes.

[Kowlin]

Do we want to include a bump to Discord.py v2.3.1?

[Jackenmen]

Yes, I'll update this PR with more up-to-date version bumps later since I still am not sure when the release will actually be happening.

[Jackenmen]

I bumped the deps again since I'm considering doing a release within the following days.