Django 5 Support

[dakotahorstman]

Making this issue to request Django 5.x support.

I use poetry as my primary environment manager and it is beyond strict when performing versioning checks. Since I use Django 5 and this project is limited to Django 4.x, I've had to fork and manually update setup.py so I can use both together.

I am currently experiencing no issues with Django 5 using wagtail-crx :)

[dakotahorstman]

Thanks for the work!!

Any ETA on a release @vsalvino? Just curious.