Changes to Retrieve or create contacts

added the optional property contact_list/items/emails to the response with the 200 status

the request property oneOf[#/components/schemas/contact_filter]/alphabetical_order became not nullable

the request property oneOf[#/components/schemas/contact_filter]/limit_count became not nullable

the request property oneOf[#/components/schemas/contact_filter]/limit_offset became not nullable

the request property oneOf[#/components/schemas/contact_filter]/pagination became not nullable

the request property oneOf[#/components/schemas/contact_filter]/search became not nullable

the contact_list/items/creation_date response's property format changed from date to date-time for status 200

api operation id postContacts was added