Add information about required changes in security.yaml to UPGRADE files
Add information about required changes in security.yaml to UPGRADE files

diimpp/Sylius,Sylius/Sylius,101medialab/Sylius,101medialab/Sylius,Sylius/Sylius,101medialab/Sylius,diimpp/Sylius,Sylius/Sylius,diimpp/Sylius