Bump jinja2 from 3.1.2 to 3.1.3

Bumps [jinja2](https://github.com/pallets/jinja) from 3.1.2 to 3.1.3.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](pallets/jinja@3.1.2...3.1.3)

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

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

requirements.txt

@@ -8,7 +8,7 @@ djaodjin-survey==0.9.14
 docutils==0.20.1          # Technically only needed for schema generation but
                           # djangorestframework will import regardless.
 gunicorn==20.1.0
-jinja2==3.1.2        # >=3.1 not available with Py36?
+jinja2==3.1.3        # >=3.1 not available with Py36?
 html5lib==1.1
 monotonic==1.6
 openpyxl==3.1.2