chore(deps): bump diff and mocha

Bumps [diff](https://github.com/kpdecker/jsdiff) to 9.0.0 and updates ancestor dependency [mocha](https://github.com/mochajs/mocha). These dependencies need to be updated together.


Updates `diff` from 7.0.0 to 9.0.0
- [Changelog](https://github.com/kpdecker/jsdiff/blob/master/release-notes.md)
- [Commits](kpdecker/jsdiff@7.0.0...v9.0.0)

Updates `mocha` from 11.8.0 to 12.0.3
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/main/CHANGELOG.md)
- [Commits](mochajs/mocha@v11.8.0...v12.0.3)

---
updated-dependencies:
- dependency-name: diff
  dependency-version: 9.0.0
  dependency-type: indirect
- dependency-name: mocha
  dependency-version: 12.0.3
  dependency-type: direct:production
...

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Author: dependabot[bot]