Changes to Update Bank Feed Account

added the new optional request property account_holders

added the new optional request property addresses

added the new optional request property emails

added the new optional request property phone_numbers

added the new optional request property custom_fields/items/ref_name

added the new optional request property available_balance

added the new optional request property balance

added the new optional request property source_account_number

added the new optional request property source_routing_number