There is a new pull request by damneq against master on the void-packages repository

https://github.com/damneq/void-packages gtk-layer-shell
https://github.com/void-linux/void-packages/pull/18428

New package: gtk-layer-shell-0.1.0
Required for updating Waybar to version 0.9.0

A patch file from https://github.com/void-linux/void-packages/pull/18428.patch is attached