add rails/deprecate_errors_as_hash to rails/upgrade_6_1_to_7_0

Author: flyerhzm

lib/rails/upgrade_6_1_to_7_0.rb

@@ -4,6 +4,7 @@
   description 'It upgrades rails 6.1 to 7.0.'
 
   add_snippet 'rails', 'convert_configs_6_1_to_7_0'
+  add_snippet 'rails', 'deprecate_errors_as_hash'
   add_snippet 'rails', 'remove_active_support_dependencies_private_api'
   add_snippet 'rails', 'update_active_storage_variant_argument'
 end