⬆️ Major bumps and django checks

Notably to django 3.2

main/api/views.py

@@ -1,6 +1,5 @@
 from rest_framework import mixins
-from rest_framework.decorators import list_route
-from rest_framework.permissions import AllowAny
+from rest_framework.decorators import action
 from rest_framework.response import Response
 
 from main.api.serializers import ProductSerializer, ProductStatSerializer
@@ -14,7 +13,7 @@ class ProductViewSet(mixins.ListModelMixin,
     serializer_class = ProductSerializer
     queryset = Product.objects.all()
 
-    @list_route(methods=['get'])
+    @action(detail=False, methods=['get'])
     def group_by_user(self, request):
         products = self.get_queryset().filter(active=True)
         serializer = ProductStatSerializer(products, many=True)