Bump jsonwebtoken from 8.5.1 to 9.0.0 in /server

Bumps [jsonwebtoken](https://github.com/auth0/node-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)

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

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

server/package.json

@@ -29,7 +29,7 @@
     "express": "^4.16.2",
     "express-session": "^1.17.1",
     "express-validator": "^6.6.1",
-    "jsonwebtoken": "^8.5.1",
+    "jsonwebtoken": "^9.0.0",
     "moment": "^2.29.0",
     "mongoose": "^5.9.16",
     "morgan": "^1.10.0",