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

https://github.com/ndowens/void-packages unoconv
https://github.com/void-linux/void-packages/pull/16072

unoconv: update to 0.9.0
Removed patch; is now part of version 0.9.0

A patch file from https://github.com/void-linux/void-packages/pull/16072.patch is attached