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

phonon-qt5-backend-gstreamer: add libxml2-devel makedepends
https://github.com/void-linux/void-packages/pull/39635

Description:
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#### Testing the changes
- I tested the changes in this PR: **NO**

#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - armv6l
 
https://github.com/void-linux/void-packages/issues/39083