build(deps-dev): bump mocha from 5.2.0 to 7.1.2

Bumps [mocha](https://github.com/mochajs/mocha) from 5.2.0 to 7.1.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v5.2.0...v7.1.2)

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

package.json

@@ -43,7 +43,7 @@
     "ajv-keywords": "^3.2.0",
     "coveralls": "^3.0.0",
     "eslint": "^2.4.0",
-    "mocha": "^5.2.0",
+    "mocha": "^7.1.2",
     "nyc": "^13.1.0",
     "pre-commit": "^1.2.0"
   }