chore(deps): bump mongodb from 4.5.0 to 4.17.0 in /backend

Bumps [mongodb](https://github.com/mongodb/node-mongodb-native) from 4.5.0 to 4.17.0.
- [Release notes](https://github.com/mongodb/node-mongodb-native/releases)
- [Changelog](https://github.com/mongodb/node-mongodb-native/blob/v4.17.0/HISTORY.md)
- [Commits](mongodb/node-mongodb-native@v4.5.0...v4.17.0)

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

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

backend/package.json

@@ -58,7 +58,7 @@
     "lint-staged": "^13.0.3",
     "moment": "^2.29.4",
     "moment-business-days": "^1.2.0",
-    "mongodb": "4.5.0",
+    "mongodb": "4.17.0",
     "mongoose": "^6.11.3",
     "mongoose-lean-virtuals": "0.9.0",
     "nodemailer": "^6.7.5",