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

https://github.com/Hoshpak/void-packages libgdiplus-6.0.3
https://github.com/void-linux/void-packages/pull/14988

libgdiplus: update to 6.0.3.
None

A patch file from https://github.com/void-linux/void-packages/pull/14988.patch is attached