Update jinja2 requirement from ~=3.0 to ~=3.1

Updates the requirements on [jinja2](https://github.com/pallets/jinja) to permit the latest version.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/jinja/compare/3.0.0...3.1.4)

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

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

docs/requirements.txt

@@ -22,7 +22,7 @@ mkdocs-minify-html-plugin
 mkdocs-autolinks-plugin
 
 # Requirements for core
-jinja2~=3.0
+jinja2~=3.1
 markdown~=3.6
 mkdocs-material-extensions~=1.3
 pygments~=2.18