Django 4.2

* updates Django to 4.x and other packages (if possible) to latest versions
* Attention: Requires postgresql >= 12.0
* updates code fragments to match requirements of newer package versions

compensation/forms/modals/state.py

@@ -5,7 +5,7 @@ Contact: ksp-servicestelle@sgdnord.rlp.de
 Created on: 18.08.22
 
 """
-from bootstrap_modal_forms.utils import is_ajax
+from bootstrap_modal_forms.mixins import is_ajax
 from dal import autocomplete
 from django import forms
 from django.contrib import messages