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

fontconfig: update to 2.13.96.
https://github.com/void-linux/void-packages/pull/37670

Description:

#### Testing the changes
- I tested the changes in this PR: **yes**

- I built this PR locally for my native architecture, **x86_64**


#### Comments

Besides being from 2018, there are a few bugs related to `~/.local/share/fonts` causing font rebuilds of some sort in Firefox. This leads to crashes and random windows/menus closing. Updating to this so far seems to have fixed that with minor testing.