Bump jsonwebtoken and twilio in /backend

Bumps [jsonwebtoken](https://github.com/auth0/node-jsonwebtoken) to 9.0.0 and updates ancestor dependency [twilio](https://github.com/twilio/twilio-node). These dependencies need to be updated together.


Updates `jsonwebtoken` from 8.5.1 to 9.0.0
- [Release notes](https://github.com/auth0/node-jsonwebtoken/releases)
- [Changelog](https://github.com/auth0/node-jsonwebtoken/blob/master/CHANGELOG.md)
- [Commits](auth0/node-jsonwebtoken@v8.5.1...v9.0.0)

Updates `twilio` from 3.72.0 to 4.10.0
- [Release notes](https://github.com/twilio/twilio-node/releases)
- [Changelog](https://github.com/twilio/twilio-node/blob/main/CHANGES.md)
- [Upgrade guide](https://github.com/twilio/twilio-node/blob/main/UPGRADE.md)
- [Commits](twilio/twilio-node@3.72.0...4.10.0)

---
updated-dependencies:
- dependency-name: jsonwebtoken
  dependency-type: indirect
- dependency-name: twilio
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

backend/package.json

@@ -16,7 +16,7 @@
     "multer": "^1.4.4",
     "nedb": "^1.8.0",
     "socket.io": "^2.0.3",
-    "twilio": "^3.72.0",
+    "twilio": "^4.10.0",
     "twit": "^2.2.11"
   }
 }