Changes to Send Campaign

added BinaryFile subschema #1 to the letter/allOf[#/components/schemas/CampaignLetterFields]/attachedPDF/allOf[#/components/schemas/AttachedPDF]/file response property oneOf list for the response status 200

removed subschema #1 subschema #2 from the letter/allOf[#/components/schemas/CampaignLetterFields]/attachedPDF/allOf[#/components/schemas/AttachedPDF]/file response property anyOf list for the response status 200

added the optional property letter/allOf[#/components/schemas/CampaignLetterFields]/paper to the response with the 200 status

added PostcardPremiumPaperID to the postcard/allOf[#/components/schemas/CampaignPostcardFields]/paper response property allOf list for the response status 200

removed PremiumPaperID from the postcard/allOf[#/components/schemas/CampaignPostcardFields]/paper response property allOf list for the response status 200

removed the optional property chequeProfile from the response with the 200 status

removed the optional property letterProfile from the response with the 200 status

removed the optional property postcardProfile from the response with the 200 status

removed the optional property selfMailerProfile from the response with the 200 status

added the new internal_server_error enum value to the error/type response property for the response status 500

added the new rate_limit_exceeded_error enum value to the error/type response property for the response status 429

added the new validation_error enum value to the error/type response property for the response status 400

added subschema #1 subschema #2 to the response body anyOf list for the response status 401

added subschema #1 subschema #2 to the response body anyOf list for the response status 404

removed subschema #1 subschema #2 from the response body anyOf list for the response status 401

removed subschema #1 subschema #2 from the response body anyOf list for the response status 404

added the optional property cheque to the response with the 200 status

added the optional property letter to the response with the 200 status

added the optional property postcard to the response with the 200 status

added the optional property selfMailer to the response with the 200 status

added the optional property snapPack to the response with the 200 status