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

https://github.com/pascal-huber/void-packages thunderbird
https://github.com/void-linux/void-packages/pull/47927

thunderbird: update to 115.6.0
[ci skip]

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

#### Local build testing
- I built this PR locally for my native architecture, x86_64-glibc
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - [x] x86_64-musl
  - [x] aarch64
  - [x] aarch64-musl
  - [x] armv7l
  - [x] i686
  
#### Notes
 - requires python3.11 (pkgutil.ImpImporter was removed in 3.12)
 - closes #46245


A patch file from https://github.com/void-linux/void-packages/pull/47927.patch is attached