logical decoding requires wal_level >= logical

Hi!
Wondering if you could help with the following:

How do I restart a testing.postgresql.Postgresql instance of postgresql? So that I can set wal_level to logical?

Reference: https://stackoverflow.com/questions/67490668/changing-wal-level-on-postgresql-13-via-client-session-is-not-being-respecte

Thank you in advance!