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

jamulus: update to 3.9.1
https://github.com/void-linux/void-packages/pull/42687

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

#### Local build testing
- I built this PR locally for my native architecture, (x86_64-glibc)

supersedes [#40204](https://github.com/void-linux/void-packages/pull/40204)