build(deps-dev): bump mocha from 7.0.1 to 7.1.0
build(deps-dev): bump mocha from 7.0.1 to 7.1.0

Bumps [mocha](https://github.com/mochajs/mocha) from 7.0.1 to 7.1.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mochajs/mocha/compare/v7.0.1...v7.1.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
jeffjewiss/broccoli-postcss-single