Bump jinja2 from 3.1.4 to 3.1.6 in /docs

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](pallets/jinja@3.1.4...3.1.6)

---
updated-dependencies:
- dependency-name: jinja2
  dependency-type: indirect
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -36,7 +36,7 @@ idna==3.7
     # via requests
 imagesize==1.4.1
     # via sphinx
-jinja2==3.1.4
+jinja2==3.1.6
     # via
     #   sphinx
     #   sphinx-jinja