Bump jinja2 from 2.10.1 to 3.1.5 in /website/content/api_docs

Bumps [jinja2](https://github.com/pallets/jinja) from 2.10.1 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@2.10.1...3.1.5)

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

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

website/content/api_docs/requirements.txt

@@ -12,7 +12,7 @@ ipykernel==5.1.2
 ipython==7.8.0
 ipython-genutils==0.2.0
 jedi==0.15.1
-Jinja2==2.10.1
+Jinja2==3.1.5
 json5==0.8.5
 jsonschema==3.0.2
 jupyter-client==5.3.2