fix(django): Upgrade to 5.2

Author: kiblik

requirements.txt

@@ -18,7 +18,7 @@ django_extensions==4.1
 django-slack==5.19.0
 django-watson==1.6.3
 django-prometheus==2.4.1
-Django==5.1.12
+Django==5.2.7
 djangorestframework==3.16.1
 html2text==2025.4.15
 humanize==4.13.0