Changes to GET /v1/customers/:customer_id/external-accounts

the response property institution_clearing_code became nullable for the status 200

the response property nickname became nullable for the status 200

the response property reference_code became nullable for the status 200

the response property institution_id became optional for the status 200

added the new BES enum value to the country_code response property for the response status 200

api tag crate::connectivity::fiat::controller::openapi::external_accounts added

api tag External Accounts (Withdraw to Self) removed

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

added the optional property recipient/oneOf[#/components/schemas/RecipientResponse]/action_required to the response with the 200 status