npmauto: bump mocha from 9.0.1 to 9.0.2 in /chromium (#20097)

Bumps [mocha](https://github.com/mochajs/mocha) from 9.0.1 to 9.0.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v9.0.1...v9.0.2)

---
updated-dependencies:
- dependency-name: mocha
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]