There's a closed pull request on the void-packages repository

[WIP] python3-pydantic: update to 2.2.1.
https://github.com/void-linux/void-packages/pull/45722

Description:
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[synapse still hasn't added compatibility with pydantic 2.x.x](https://github.com/matrix-org/synapse/pull/15979) so this will have to wait until then but wanted to start this to make sure nothing was missed or broken.

#### Testing the changes
- I tested the changes in this PR: **briefly**

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