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

https://github.com/mustaqimM/void-packages update_harfbuzz
https://github.com/void-linux/void-packages/pull/21915

harfbuzz: update to 2.6.6
EDIT.

Perhaps this should be merged after the latest update of `icu` #21481

A patch file from https://github.com/void-linux/void-packages/pull/21915.patch is attached