Bump mocha from 7.1.0 to 8.0.0

Bumps [mocha](https://github.com/mochajs/mocha) from 7.1.0 to 8.0.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mochajs/mocha/compare/v7.1.0...v8.0.0)

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

package.json

@@ -93,7 +93,7 @@
     "eslint": "^5.13.0",
     "eslint-config-airbnb": "^17.1.0",
     "eslint-plugin-import": "^2.20.2",
-    "mocha": "^7.1.0",
+    "mocha": "^8.0.0",
     "nodemon": "^2.0.2",
     "supertest": "^4.0.2",
     "tmp": "0.1.0"