build(deps-dev): bump mocha from 6.1.4 to 6.2.0

Bumps [mocha](https://github.com/mochajs/mocha) from 6.1.4 to 6.2.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v6.1.4...v6.2.0)

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

package.json

@@ -46,7 +46,7 @@
     "elint": "^2.0.0-alpha.1",
     "elint-preset-kw": "^1.8.1",
     "joi": "^14.3.1",
-    "mocha": "^6.1.4",
+    "mocha": "^6.2.0",
     "nyc": "^14.1.1",
     "proxyquire": "^2.1.0"
   },