Bump mocha from 6.2.3 to 9.2.2 (#215)

Bumps [mocha](https://github.com/mochajs/mocha) from 6.2.3 to 9.2.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v6.2.3...v9.2.2)

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

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