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

Revert "xz: update to 5.6.0."
https://github.com/void-linux/void-packages/pull/49593

Description:
This reverts commit ba6c7f1ffc6012148b0deea038c23794cb93c6c5.

See: https://www.openwall.com/lists/oss-security/2024/03/29/4