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

intervention/autocomplete/intervention.py

@@ -34,3 +34,9 @@ class InterventionAutocomplete(Select2QuerySetView):
                 Q(title__icontains=self.q)
             ).distinct()
         return qs
+
+    def get_result_label(self, result):
+        return str(result)
+
+    def get_selected_result_label(self, result):
+        return str(result)