Bump jinja2 from 3.1.4 to 3.1.5 in /docs in the pip group

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


Updates `jinja2` from 3.1.4 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@3.1.4...3.1.5)

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

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

docs/requirements.txt

@@ -53,7 +53,7 @@ imageio==2.36.0
     # via scikit-image
 imagesize==1.4.1
     # via sphinx
-jinja2==3.1.4
+jinja2==3.1.5
     # via
     #   myst-parser
     #   sphinx