Bump jinja2 from 3.1.2 to 3.1.3 in /server

Bumps [jinja2](https://github.com/pallets/jinja) from 3.1.2 to 3.1.3.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](pallets/jinja@3.1.2...3.1.3)

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

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

server/requirements.txt

@@ -5,7 +5,7 @@ Flask==3.0.0
 Flask-WTF==1.2.1
 icontract==2.6.4
 itsdangerous==2.1.2
-Jinja2==3.1.2
+Jinja2==3.1.3
 MarkupSafe==2.1.3
 numpy==1.26.0
 packaging==23.2