chore(deps): bump mongodb and mongoose in /backend
Bumps [mongodb](https://github.com/mongodb/node-mongodb-native) to 4.17.1 and updates ancestor dependency [mongoose](https://github.com/Automattic/mongoose). These dependencies need to be updated together.
Updates `mongodb` from 4.9.1 to 4.17.1
- [Release notes](https://github.com/mongodb/node-mongodb-native/releases)
- [Changelog](https://github.com/mongodb/node-mongodb-native/blob/v4.17.1/HISTORY.md)
- [Commits](https://github.com/mongodb/node-mongodb-native/compare/v4.9.1...v4.17.1)
Updates `mongoose` from 6.6.5 to 6.12.0
- [Release notes](https://github.com/Automattic/mongoose/releases)
- [Changelog](https://github.com/Automattic/mongoose/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Automattic/mongoose/compare/6.6.5...6.12.0)
---
updated-dependencies:
- dependency-name: mongodb
dependency-type: indirect
- dependency-name: mongoose
dependency-type: direct:production
...
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