Upgrade Django to 5.2.1 for Objecttypes API

[stevenbal]

Thema / Theme

Objecttypen API

Omschrijving / Description

https://docs.djangoproject.com/en/5.2/releases/5.2/

This has been done for Open Zaak and Objects API already (#572). Main things to pay attention to:

• Postgres 14 is required after upgrading, so versions below this should be dropped in CI
• The logout button in the admin should be changed to be a form 2316112

Toegevoegde waarde / Added value

No response

Aanvullende opmerkingen / Additional context

No response