Bump moment from 2.29.1 to 2.29.2 in /backend

Bumps [moment](https://github.com/moment/moment) from 2.29.1 to 2.29.2.
- [Release notes](https://github.com/moment/moment/releases)
- [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/moment/moment/compare/2.29.1...2.29.2)

---
updated-dependencies:
- dependency-name: moment
  dependency-type: direct:production
...

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

backend/package.json

@@ -47,7 +47,7 @@
     "md5": "^2.2.1",
     "merge-files": "^0.1.2",
     "mocha": "^8.4.0",
-    "moment": "^2.29.1",
+    "moment": "^2.29.2",
     "mongodb": "^3.6.9",
     "multer": "^1.4.2",
     "node-fetch": "^2.6.7",