Merge pull request #28017 from mtsmfm/suppress-dep-warn

Suppress deprecation warning `implementing to_yaml is deprecated`

activerecord/lib/active_record/connection_adapters/mysql/type_metadata.rb

@@ -2,6 +2,8 @@ module ActiveRecord
   module ConnectionAdapters
     module MySQL
       class TypeMetadata < DelegateClass(SqlTypeMetadata) # :nodoc:
+        undef to_yaml if method_defined?(:to_yaml)
+
         attr_reader :extra
 
         def initialize(type_metadata, extra: "")

activerecord/lib/active_record/connection_adapters/postgresql/type_metadata.rb

 module ActiveRecord
   module ConnectionAdapters
     class PostgreSQLTypeMetadata < DelegateClass(SqlTypeMetadata)
+      undef to_yaml if method_defined?(:to_yaml)
+
       attr_reader :oid, :fmod, :array
 
       def initialize(type_metadata, oid: nil, fmod: nil)

activerecord/lib/active_record/type/serialized.rb

 module ActiveRecord
   module Type
     class Serialized < DelegateClass(ActiveModel::Type::Value) # :nodoc:
+      undef to_yaml if method_defined?(:to_yaml)
+
       include ActiveModel::Type::Helpers::Mutable
 
       attr_reader :subtype, :coder