v3.21.1: Bump alpine from 3.21.0 to 3.21.1 in /compress (#6)

Bumps alpine from 3.21.0 to 3.21.1.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>