According to #8599 and #8591 DRF 3.13 does not work with Django 4.1. But https://github.com/encode/django-rest-framework/blob/master/setup.py#L85 says the opposite.

Hyperkitty (Mailman 3) is a Django project which uses DRF and can work with Django 4.1. It uses DRF 3.13.1 as it is the last released version. This leads to a situation, where DRF 3.13 is used with Django 4.1, which is incompatible, but no warning hints on this incompatibility.

By releasing a version 3.13.2, which states explicitly that it does not work with Django 4.1, indirect users of Django 4.1 will get a hint, when they try to combine incompatible versions.