deskutils/py-paperless-ngx: Move away from py-dj52-* ports
- The counterparts of the py-dj52-* ports were switched to Django 5.2 in ce59801b72ef, thus move py-paperless-ngx to those ones.
- Rename py-dj52-django-treenode to py-django-treenode, since there's no equivalent for it yet.
- Bump PORTREVISION due changed dependencies.
PR: 291707
Approved by: grembo (maintainer, via private mail)