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

grep: update to 3.8.
https://github.com/void-linux/void-packages/pull/39340

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

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#### Local build testing
- I built this PR locally for my native architecture, x86_64-musl
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - ppc-musl (cross)
  - mips-musl (cross)