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

https://github.com/ndowens/void-packages libmaxminddb
https://github.com/void-linux/void-packages/pull/27507

libmaxminddb: update to 1.4.3.
Also move libs and pkgconfig to -devel

A patch file from https://github.com/void-linux/void-packages/pull/27507.patch is attached