Bump mocha from 8.0.1 to 8.1.0

Bumps [mocha](https://github.com/mochajs/mocha) from 8.0.1 to 8.1.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v8.0.1...v8.1.0)

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

package.json

@@ -33,7 +33,7 @@
     "chai-http": "^4.3.0",
     "eslint": "^7.5.0",
     "eslint-config-google": "^0.14.0",
-    "mocha": "^8.0.1",
+    "mocha": "^8.1.0",
     "prettier": "^2.0.5",
     "rimraf": "^3.0.2",
     "superagent": ">=5.3.1"