2023/05/09分のコミットです。 CHANGELOGにのったコミットは以下の通りです。 activesupport/CHANGELOG.md MessageEncryptor, MessageVerifier, and config.active_support.message_serializer now accept :message_pack and :message_pack_allow_marshal as serializers. config.action_dispatch.cookies_serializer now accepts :message_pack and :…