Updates Django to version 5.2.1

Upgrades Django from version 5.2 to 5.2.1 in Pipfile.lock and requirements.txt.
Updates associated hash values to ensure integrity.

This resolves minor bug fixes and improvements introduced in the new version.

Author: vasudev-gm

Pipfile.lock

@@ -1,7 +1,7 @@
 -i https://pypi.org/simple
 asgiref==3.8.1; python_version >= '3.8'
 attrs==25.3.0; python_version >= '3.8'
-django==5.2; python_version >= '3.10'
+django==5.2.1; python_version >= '3.10'
 djangorestframework==3.16.0; python_version >= '3.9'
 drf-spectacular==0.28.0; python_version >= '3.7'
 drf-spectacular-sidecar==2025.5.1; python_version >= '3.6'