Stamp fields missing

[tetexxr]

Hi guys

I'm using your client to work easily with Facturapi, but I found that 2 fields from the API response are not present in the stamp type.

As you can see here:
https://github.com/FacturAPI/facturapi-node/blob/main/src/types/invoice.ts#L63

The stamp type doesn't have two fields that are present in the API response, that are:
rfc_provider_cert
complement_string

This two fields are required to be printed in the invoice.
Can you please add them to the type, or tell me how can I get those fields to add them to the type?

Thanks in advance