chore(deps): bump pyjwt[crypto] from 2.8.0 to 2.9.0 in /backend

Bumps [pyjwt[crypto]](https://github.com/jpadilla/pyjwt) from 2.8.0 to 2.9.0.
- [Release notes](https://github.com/jpadilla/pyjwt/releases)
- [Changelog](https://github.com/jpadilla/pyjwt/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/jpadilla/pyjwt/compare/2.8.0...2.9.0

)

---
updated-dependencies:
- dependency-name: pyjwt[crypto]
  dependency-type: direct:production
  update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>

backend/requirements.txt

@@ -62,7 +62,7 @@ rank-bm25==0.2.2
 
 faster-whisper==1.0.2
 
-PyJWT[crypto]==2.8.0
+PyJWT[crypto]==2.9.0
 authlib==1.3.1
 
 black==24.8.0