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

https://github.com/akierig/void-packages fish-3.6.3
https://github.com/void-linux/void-packages/pull/47574

fish-shell: update to 3.6.3.
#### 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
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - x86_64-musl

fixes [CVE-2023-49284](https://github.com/fish-shell/fish-shell/security/advisories/GHSA-2j9r-pm96-wp4f)

A patch file from https://github.com/void-linux/void-packages/pull/47574.patch is attached