Bump django from 4.1.7 to 4.1.9 in /requirements

Bumps [django](https://github.com/django/django) from 4.1.7 to 4.1.9.
- [Commits](https://github.com/django/django/compare/4.1.7...4.1.9)

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

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

requirements/requirements.txt

@@ -11,7 +11,7 @@ python-docx==0.8.11
 requests==2.28.2
 weasyprint==58.0
 XlsxWriter==3.0.8
-Django==4.1.7
+Django==4.1.9
 django-auth-ldap==4.1.0
 django_debug_toolbar==3.8.1
 django-environ==0.10.0