Bump js-yaml and mocha in /react-express-mysql/backend

Bumps [js-yaml](https://github.com/nodeca/js-yaml) to 4.3.1 and updates ancestor dependency [mocha](https://github.com/mochajs/mocha). These dependencies need to be updated together.


Updates `js-yaml` from 4.1.0 to 4.3.1
- [Changelog](https://github.com/nodeca/js-yaml/blob/4.3.1/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/4.1.0...4.3.1)

Updates `mocha` from 9.2.2 to 11.8.0
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/v11.8.0/CHANGELOG.md)
- [Commits](https://github.com/mochajs/mocha/compare/v9.2.2...v11.8.0)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 4.3.1
  dependency-type: indirect
- dependency-name: mocha
  dependency-version: 11.8.0
  dependency-type: direct:development
...

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

react-express-mysql/backend/package.json

@@ -23,7 +23,7 @@
     "chai": "^4.2.0",
     "chai-http": "^4.3.0",
     "cross-env": "^7.0.2",
-    "mocha": "^9.2.2",
+    "mocha": "^11.8.0",
     "nodemon": "^2.0.4"
   }
 }