build(deps): bump jsonwebtoken and @azure/msal-node in /backend

Bumps [jsonwebtoken](https://github.com/auth0/node-jsonwebtoken) and [@azure/msal-node](https://github.com/AzureAD/microsoft-authentication-library-for-js). These dependencies needed 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 `@azure/msal-node` from 1.14.4 to 1.14.6
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-js/releases)
- [Commits](AzureAD/microsoft-authentication-library-for-js@msal-node-v1.14.4...msal-node-v1.14.6)

---
updated-dependencies:
- dependency-name: jsonwebtoken
  dependency-type: indirect
- dependency-name: "@azure/msal-node"
  dependency-type: indirect
...

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