Changes to List Supported Currencies

api operation id listSupportedCurrencies removed and replaced with listSupportedCurrenciesV2

the currencies/items/currency response's property pattern ^[A-Z]{3}$ was added for the status 200

the response's body type changed from no type to object for status 200

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

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