chore(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] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -47,7 +47,7 @@
     "gulp-svgmin": "^2.2.0",
     "gulp-uglify": "^3.0.2",
     "lazypipe": "^1.0.2",
-    "mocha": "^6.1.4",
+    "mocha": "^6.2.0",
     "supertest": "^4.0.2"
   },
   "dependencies": {