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

graphviz: fix update-check
https://github.com/void-linux/void-packages/pull/49253

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

`Stable Release` is no longer used since `v2.44.1`. See https://gitlab.com/graphviz/graphviz/-/tags?page=2.

cc @leahneukirchen