chore(deps): update dependency django to v5.2.1 [security]

Author: renovate[bot]

requirements/base.txt

@@ -1,6 +1,6 @@
 beautifulsoup4==4.12.3
 bleach[css]==6.2.0
-Django==5.1.11
+Django==5.2.1
 django-allauth==65.3.1
 django-autoslug==1.9.9
 https://github.com/liqd/django-ckeditor-5/releases/download/v0.2.11-liqd/django_ckeditor_5-0.2.11-py3-none-any.whl