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

Updates: OTPClient 3.1.8, libcotp 2.0.1
https://github.com/void-linux/void-packages/pull/42619

Description:
The new library version is needed for *OTPClient*, since it replaces `libbaseencode` in new releases.
I am also willing to adopt *OTPClient*, but it has a listed maintainer.

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

#### Local build testing
- I built this PR locally for my native architecture, (x86_64)
- I built this PR locally for these architectures:
  - i686