Yes, as long your new country is supported by Prolific. You can check this here: Who can participate in studies?
You'll need to update your country of residence as listed in your About You. Head to your About You section, specifically the Demographics section. Delete any questions you need to update and wait a day or two for the question(s) to re-appear. Answer with your new country of residence.
Then, you'll need to add your new phone number that matches your new country.