chore(deps): bump jinja2 from 3.1.4 to 3.1.6 in /backend

Bumps [jinja2](https://github.com/pallets/jinja) from 3.1.4 to 3.1.6.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/jinja/compare/3.1.4...3.1.6)

---
updated-dependencies:
- dependency-name: jinja2
  dependency-version: 3.1.6
  dependency-type: direct:production
...

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

backend/requirements.txt

@@ -11,4 +11,4 @@ rq==1.16.2
 redis==5.1.1
 fastapi-clerk-auth==0.0.9
 sse-starlette==2.1.3
-jinja2==3.1.4
+jinja2==3.1.6