build(deps-dev): bump mocha from 7.2.0 to 8.4.0 (#1414)

Bumps [mocha](https://github.com/mochajs/mocha) from 7.2.0 to 8.4.0.
- [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/v7.2.0...v8.4.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -50,7 +50,7 @@
     "eslint": "^6.5.1",
     "eventemitter2": "^6.0.0",
     "json-schema-to-markdown-table": "^0.4.0",
-    "mocha": "^7",
+    "mocha": "^8",
     "nyc": "^15",
     "prettier": "^2.0.5",
     "process": "^0.11.10",