Bump jsonwebtoken from 8.5.1 to 9.0.0 in /front-end

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>

Author: dependabot[bot]

front-end/package.json

@@ -6,7 +6,7 @@
     "antd": "^3.26.3",
     "axios": "^0.18.1",
     "bootstrap": "^4.3.1",
-    "jsonwebtoken": "^8.5.1",
+    "jsonwebtoken": "^9.0.0",
     "moment": "^2.24.0",
     "node-sass": "^4.12.0",
     "react": "^16.12.0",