Bump mocha from 7.2.0 to 8.1.0

Bumps [mocha](https://github.com/mochajs/mocha) from 7.2.0 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@v7.2.0...v8.1.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -39,7 +39,7 @@
     "eslint-plugin-prettier": "^3.1.0",
     "lerna-changelog": "^1.0.0",
     "markdownlint-cli": "^0.23.1",
-    "mocha": "^7.0.1",
+    "mocha": "^8.1.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^1.19.0"
   },