⬆️ Bump mocha from 3.5.3 to 9.0.3

Bumps [mocha](https://github.com/mochajs/mocha) from 3.5.3 to 9.0.3.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v3.5.3...v9.0.3)

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

package.json

@@ -12,7 +12,7 @@
   "devDependencies": {
     "chai": "^3.5.0",
     "coveralls": "^2.13.1",
-    "mocha": "^3.4.1",
+    "mocha": "^9.0.3",
     "nyc": "^10.3.2",
     "qrcode": "^0.8.1"
   },