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

valgrind: update to 3.18.1.
https://github.com/void-linux/void-packages/pull/34104

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

#### Local build testing
- I built this PR locally for my native architecture, (aarch64)
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - aarch64-musl


This superseeds #30380.
To address remarks from the old PR:
 - The musl.supp file is now upstream, no need to patch it in anymore.
 - armv6 was not supported by valgrind in the past, I could not find any hint that this changed. If the code generation in valgrind asumes armv7 patching the configure script likely won't be enough.