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

https://github.com/pbui/void-packages python3-Telethon
https://github.com/void-linux/void-packages/pull/16208

python3-Telethon: update to 1.10.8.
Change homepage to GitHub page (more useful).

A patch file from https://github.com/void-linux/void-packages/pull/16208.patch is attached