Bump mocha from 5.2.0 to 6.0.1

Bumps [mocha](https://github.com/mochajs/mocha) from 5.2.0 to 6.0.1.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v5.2.0...v6.0.1)

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

package.json

@@ -42,7 +42,7 @@
     "eslint-plugin-mocha": "^5.2.0",
     "hap-nodejs": "^0.4.21",
     "jshint": "^2.9.4",
-    "mocha": "^5.2.0",
+    "mocha": "^6.0.1",
     "nyc": "^13.1.0",
     "should": "^13.2.3",
     "sinon": "^4.5.0",