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

grip: update to 4.6.1.
https://github.com/void-linux/void-packages/pull/38749

Description:
Flask removed `safe_join` in their [2.1.0](https://flask.palletsprojects.com/en/2.2.x/changes/#version-2-1-0) release, which breaks the current version of grip.

#### 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 (if supported. mark crossbuilds):
  - aarch64-musl
  - armv7l
  - armv6l-musl
  - armv6l
  - i686
  - x86_64-musl