Bump mocha from 8.3.0 to 8.3.1 (yahoo#113)

Bumps [mocha](https://github.com/mochajs/mocha) from 8.3.0 to 8.3.1.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v8.3.0...v8.3.1)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]