build(deps-dev): bump mocha from 6.0.1 to 6.0.2

Bumps [mocha](https://github.com/mochajs/mocha) from 6.0.1 to 6.0.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v6.0.1...v6.0.2)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

yarn.lock

@@ -1075,8 +1075,8 @@ mkdirp@0.5.1, mkdirp@^0.5.1:
     minimist "0.0.8"
 
 mocha@^6.0.0:
-  version "6.0.1"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.0.1.tgz#c287da87913fa0edc4c44850ba8bc4fdbf20d3ea"
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-6.0.2.tgz#cdc1a6fdf66472c079b5605bac59d29807702d2c"
   dependencies:
     ansi-colors "3.2.3"
     browser-stdout "1.3.1"