build(deps-dev): bump mocha from 7.2.0 to 8.1.1

Bumps [mocha](https://github.com/mochajs/mocha) from 7.2.0 to 8.1.1.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v7.2.0...v8.1.1)

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

package.json

@@ -27,7 +27,7 @@
     "@types/node": "^14.0.1",
     "chai": "^4.1.2",
     "coveralls": "^3.0.7",
-    "mocha": "^7.0.1",
+    "mocha": "^8.1.1",
     "nyc": "15.1.0",
     "typescript": "^3.5.3"
   }