Bump jinja2 from 2.11.3 to 3.1.3 in /oidc_example/simple_op

Bumps [jinja2](https://github.com/pallets/jinja) from 2.11.3 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@2.11.3...3.1.3)

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

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

oidc_example/simple_op/requirements.txt

@@ -1,4 +1,4 @@
 cherrypy==3.2.4
 pyaml==15.03.1
-Jinja2==2.11.3
+Jinja2==3.1.3
 yubico-client==1.9.1