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

mumble: improve murmur package
https://github.com/void-linux/void-packages/pull/37230

Description:
* add qt5-plugin-sqlite to dependencies
otherwise, running mumble-server with the default configuration fails
<F>2022-05-21 19:47:53.080 ServerDB: Database driver QSQLITE not available

* add a system service
* remove murmur-user-wrapper

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