Bump jinja2 from 3.1.3 to 3.1.5 in /example (#2125) #nolog

Bumps [jinja2](https://github.com/pallets/jinja) from 3.1.3 to 3.1.5.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](pallets/jinja@3.1.3...3.1.5)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

example/requirements.txt

@@ -7,7 +7,7 @@ Flask-Session==0.4.0
 Flask-SocketIO
 importlib-metadata==4.12.0
 itsdangerous==2.1.2
-Jinja2==3.1.3
+Jinja2==3.1.5
 MarkupSafe==2.1.1
 python-engineio
 python-socketio