build(deps): bump jinja2 in /docs in the production-dependencies group

Bumps the production-dependencies group in /docs with 1 update: [jinja2](https://github.com/pallets/jinja).


Updates `jinja2` from 3.1.5 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@3.1.5...3.1.6)

---
updated-dependencies:
- dependency-name: jinja2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -1,5 +1,5 @@
 Babel==2.17.0
-Jinja2==3.1.5
+Jinja2==3.1.6
 MarkupSafe==3.0.2
 Pygments==2.19.1
 Sphinx==7.4.7