Changes to Stream mailbox events

removed MailboxAddress subschema #2 from the message/from response property allOf list for the response status 200

added MailboxAddress subschema #2 to the message/from response property anyOf list for the response status 200

the response property message became nullable for the status 200

added the optional property message/attachments to the response with the 200 status

removed MailboxMessageSummary subschema #2 from the message response property allOf list for the response status 200

added the required property message/bcc to the response with the 200 status

added the required property message/body to the response with the 200 status

added the required property message/cc to the response with the 200 status

added the required property message/flags to the response with the 200 status

added the required property message/folder_ids to the response with the 200 status

added the required property message/from to the response with the 200 status

added the required property message/has_attachments to the response with the 200 status

added the required property message/id to the response with the 200 status

added the required property message/keywords to the response with the 200 status

added the required property message/preview to the response with the 200 status

added the required property message/received_at to the response with the 200 status

added the required property message/rfc5322_message_id to the response with the 200 status

added the required property message/sent_at to the response with the 200 status

added the required property message/size_bytes to the response with the 200 status

added the required property message/subject to the response with the 200 status

added the required property message/thread_id to the response with the 200 status

added the required property message/to to the response with the 200 status

the endpoint scheme security oauth2 was added to the API

the response property message/allOf[subschema #2]/attachments became optional for the status 200

the response property message/allOf[#/components/schemas/MailboxMessageSummary]/attachments became optional for the status 200

the response property message/allOf[subschema #2]/attachments became required for the status 200

the response property message/allOf[subschema #2]/attachments became optional for the status 200

added the required property message/allOf[#/components/schemas/MailboxMessageSummary]/attachments to the response with the 200 status

added the new optional query request parameter mailbox_id