Add column color to cache keys

So cards change colors when you change the column color

app/helpers/cards_helper.rb

@@ -35,6 +35,6 @@ module CardsHelper
   end
 
   def cacheable_preview_parts_for(card, *options)
-    [ card, card.collection, card.collection.entropy_configuration, card.collection.publication, *options ]
+    [ card, card.collection, card.collection.entropy_configuration, card.collection.publication, card.column&.color, *options ]
   end
 end

app/models/card/cacheable.rb

@@ -21,7 +21,7 @@ module Card::Cacheable
     end
 
     def for_preview(*other)
-      [ card, card.collection.entropy_configuration, card.collection.publication, *other ]
+      [ card, card.collection.entropy_configuration, card.collection.publication, card.column&.color, *other ]
     end
   end
 end

app/views/cards/_card.json.jbuilder

@@ -1,4 +1,4 @@
-json.cache! card do
+json.cache! [card, card.column&.color] do
   json.(card, :id, :title, :status)
   json.image_url card.image.presence && url_for(card.image)