chore(deps-dev): bump php-stubs/wp-cli-stubs from 2.9.0 to 2.12.0

Bumps [php-stubs/wp-cli-stubs](https://github.com/php-stubs/wp-cli-stubs) from 2.9.0 to 2.12.0.
- [Commits](php-stubs/wp-cli-stubs@v2.9.0...v2.12.0)

---
updated-dependencies:
- dependency-name: php-stubs/wp-cli-stubs
  dependency-version: 2.12.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]