PC-24: Fix rubocop

Author: OGoncharenko

app/models/customer.rb

@@ -9,7 +9,7 @@ def self.ransackable_attributes(_auth_object = nil)
        updated_at]
   end
 
-  def self.ransackable_associations(auth_object = nil)
+  def self.ransackable_associations(_auth_object = nil)
     ["quotes"]
   end
 end