Changes to List disputes

the response property items/items/cardholderEmail became nullable for the status 200

the response property items/items/cardholderName became nullable for the status 200

the response property items/items/cardholderEmail became optional for the status 200

the response property items/items/cardholderName became optional for the status 200

added the optional property items/items/cardLast4 to the response with the 200 status

added the optional property items/items/cardType to the response with the 200 status

added the optional property items/items/source to the response with the 200 status

added the optional property items/items/transactionDate to the response with the 200 status

added the optional property items/items/transactionName to the response with the 200 status

added the required property items/items/refundAmount to the response with the 200 status

added the required property items/items/refundCurrency to the response with the 200 status