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

gtk+3: update to 3.24.21.
https://github.com/void-linux/void-packages/pull/23530

Description:
Also add dependency on `adwaita-icon-theme` because GTK applications will not display properly without at least some icon theme; see [void-docs PR #396](https://github.com/void-linux/void-docs/pull/396). The appropriate response is to pull in the default theme, then let users `ignorepkg` if they wish to replace it with something custom.

cc: @Gottox (maintainer) @flexibeast @ericonr