The idea is:
Add the secure option from the Connection method of promise-ftp to the FTP Node settings.
My use case:
The FTP does only support secure connections. This must be enabled in the ftp library by setting secure: true in the Ftp.node.js where a new ftp is added.
I think it would be beneficial to add this because:
FTPs, that only support secure connections can not be connected via the FTP Node otherwise (except if you edit the Node.js file manually, if you host n8n yourself).