There is an updated pull request by realcharmer against master on the void-packages repository

https://github.com/realcharmer/void-packages otpclient
https://github.com/void-linux/void-packages/pull/49166

OTPClient: update to 3.5.1
- I tested the changes in this PR: **briefly**
- I built this PR locally for my native architecture, (x86_64-glibc)

A patch file from https://github.com/void-linux/void-packages/pull/49166.patch is attached