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

xonotic: update to 0.8.5
https://github.com/void-linux/void-packages/pull/37835

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

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`xonotic/patches/musl-moncontrol.patch` isn't needed anymore and will fail the build, therefore it has been removed.