Bump mocha from 8.3.2 to 8.4.0

Bumps [mocha](https://github.com/mochajs/mocha) from 8.3.2 to 8.4.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v8.3.2...v8.4.0)

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

Author: dependabot[bot]

package-lock.json

@@ -129,7 +129,7 @@
     "@typescript-eslint/parser": "^4.22.1",
     "eslint": "^7.26.0",
     "glob": "^7.1.7",
-    "mocha": "^8.3.2",
+    "mocha": "^8.4.0",
     "ts-loader": "^9.1.2",
     "tscpaths": "0.0.9",
     "typescript": "^4.2.4",