chore(deps-dev): bump unified from 10.1.2 to 11.0.3 (#978)

Bumps [unified](https://github.com/unifiedjs/unified) from 10.1.2 to 11.0.3.
- [Release notes](https://github.com/unifiedjs/unified/releases)
- [Changelog](https://github.com/unifiedjs/unified/blob/main/changelog.md)
- [Commits](unifiedjs/unified@10.1.2...11.0.3)

---
updated-dependencies:
- dependency-name: unified
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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