Bump icanhazstring/composer-unused from 0.8.5 to 0.8.8 (#95)

Bumps [icanhazstring/composer-unused](https://github.com/composer-unused/composer-unused) from 0.8.5 to 0.8.8.
- [Release notes](https://github.com/composer-unused/composer-unused/releases)
- [Changelog](https://github.com/composer-unused/composer-unused/blob/main/CHANGELOG.md)
- [Commits](composer-unused/composer-unused@0.8.5...0.8.8)

---
updated-dependencies:
- dependency-name: icanhazstring/composer-unused
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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