Hello Bruno,
Hope you're doing well.
As far as I can tell, it won't be possible for you to import that YAML file directly. But you may easily convert it to a JSON file and import it afterwards.
You can use an online converter, such as this one.
Just make sure that you save the file as a JSON file and you should be able to import it successfully afterwards :)
Hope that this helps you!
Kind regards,
Rui Barradas