Changes to Retrieve auth data

the accounts/items/balances/available_balance response's property pattern ^-?\d{1,10}\.\d{2}$ was added for the status 200

the accounts/items/balances/balance response's property pattern ^-?\d{1,10}\.\d{2}$ was added for the status 200

the accounts/items/balances/credit_limit response's property pattern ^-?\d{1,10}\.\d{2}$ was added for the status 200

the response property accounts/items/balances/currency_code became nullable for the status 200

the response property accounts/items/mask became nullable for the status 200