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

https://github.com/jnbr/void-packages firefox86
https://github.com/void-linux/void-packages/pull/29097

firefox: update to 86.0.
<!-- Mark items with [x] where applicable -->

#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

#### Have the results of the proposed changes been tested?
- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [x] I generally don't use the affected packages but briefly tested this PR


[skip CI]

#### Does it build and run successfully? 
Builds for all our official supported architectures.
Tested on x86_64-glibc.


A patch file from https://github.com/void-linux/void-packages/pull/29097.patch is attached