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

https://github.com/pbui/void-packages offlineimap
https://github.com/void-linux/void-packages/pull/14207

offlineimap: update to 7.3.0.
- Add new required package: python-rfc6555.

- Adopt package.

A patch file from https://github.com/void-linux/void-packages/pull/14207.patch is attached