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

python3-matplotlib: update to 3.8.0, also update deps
https://github.com/void-linux/void-packages/pull/46109

Description:
- python3-matplotlib: update to 3.8.0. (@ahesford)
- python3-kiwisolver: update to 1.4.5, adopt.
- python3-contourpy: update to 1.1.1. (@misuchiru03) 

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

The update to matplotlib affects sagemath in a mild way (see https://github.com/sagemath/sage/pull/36279 which contains a fix).

I have not yet tested the updates to contourpy and kiwisolver with sagemath, will do.

I'm not sure it's necessary to patch sagemath now as the issue is very minor.

Btw, I'm thinking of packaging https://matplotlib.org/ipympl/ since it seems it will be a standard dependency of sagemath soon (https://github.com/sagemath/sage/pull/36129#issuecomment-1696062778)

Edit: in #46003 I added a patch to sagemath, to support matplotlib 3.8.0, so we don't need to rebuild sagemath twice.

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