Bump django from 4.1.5 to 4.1.6 in /requirements

Bumps [django](https://github.com/django/django) from 4.1.5 to 4.1.6.
- [Release notes](https://github.com/django/django/releases)
- [Commits](https://github.com/django/django/compare/4.1.5...4.1.6)

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

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

requirements/requirements.txt

@@ -9,7 +9,7 @@ python-docx==0.8.11
 requests==2.28.2
 weasyprint==57.2
 XlsxWriter==3.0.7
-Django==4.1.5
+Django==4.1.6
 django-auth-ldap==4.1.0
 django_debug_toolbar==3.8.1
 django-environ==0.9.0