Fix deprecation warning in rails 6.0

Warning: Class level methods will no longer inherit scoping from create in Rails 6.1

app/models/enterprise.rb

@@ -121,7 +121,7 @@ class Enterprise < ApplicationRecord
   scope :not_ready_for_checkout, lambda {
     # When ready_for_checkout is empty, return all rows when there are no enterprises ready for
     # checkout.
-    ready_enterprises = Enterprise.ready_for_checkout.
+    ready_enterprises = Enterprise.default_scoped.ready_for_checkout.
       except(:select).
       select('DISTINCT enterprises.id')
 

app/models/spree/shipment.rb

@@ -309,7 +309,7 @@ module Spree
       record = true
       while record
         random = "H#{Array.new(11) { rand(9) }.join}"
-        record = self.class.find_by(number: random)
+        record = self.class.default_scoped.find_by(number: random)
       end
       self.number = random
     end

lib/spree/core/permalinks.rb

@@ -49,8 +49,9 @@ module Spree
 
           # Do other links exist with this permalink?
           other = self.class.
-            where("#{self.class.table_name}.#{field} LIKE ?", "#{permalink_value}%")
+            default_scoped.where("#{self.class.table_name}.#{field} LIKE ?", "#{permalink_value}%")
           if other.any?
+
             # Find the existing permalink with the highest number, and increment that number.
             # (If none of the existing permalinks have a number, this will evaluate to 1.)
             number = other.map { |o| o.__send__(field)[/-(\d+)$/, 1].to_i }.max + 1