build(deps-dev): bump mocha from 7.2.0 to 8.1.3

Bumps [mocha](https://github.com/mochajs/mocha) from 7.2.0 to 8.1.3.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v7.2.0...v8.1.3)

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

Author: dependabot-preview[bot]

package.json

@@ -43,7 +43,7 @@
     "ajv-keywords": "^3.2.0",
     "coveralls": "^3.0.0",
     "eslint": "^7.1.0",
-    "mocha": "^7.2.0",
+    "mocha": "^8.1.3",
     "nyc": "^15.0.1",
     "pre-commit": "^1.2.0"
   }