Bump jsonwebtoken from 8.5.1 to 9.0.0

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>

package.json

@@ -24,7 +24,7 @@
         "helmet": "^3.21.2",
         "https": "^1.0.0",
         "jade": "^1.11.0",
-        "jsonwebtoken": "^8.5.1",
+        "jsonwebtoken": "^9.0.0",
         "mongodb": "^3.3.5",
         "mongoose": "^5.7.13",
         "mongoose-unique-validator": "^2.0.3",