There is an updated pull request by mhmdanas against master on the void-packages repository

https://github.com/mhmdanas/void-packages mesa-demos-9.0.0
https://github.com/void-linux/void-packages/pull/42959

mesa-demos: update to 9.0.0.
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#### Testing the changes
- I tested the changes in this PR: **briefly**

@Johnnynator

The package size really ballooned up with this upgrade, not sure if it's cause for concern.

[Announcement with changes](https://lists.freedesktop.org/archives/mesa-announce/2023-March/000711.html)

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A patch file from https://github.com/void-linux/void-packages/pull/42959.patch is attached