I have found the cli.py file mentioned by @ankush. But the code is for version 5.14
In version 5.12 doesn’t have the mentioned function (def execute_cmd).
My goal is to disable the notification (not necessarily the version checking itself) in version 5.12 so I don’t have to update to 5.14.
You can also make this log go to stderr instead so scripts using stdout get (somewhat) parsable output, but this isn’t the only thing that pops up on stdout… auditing all of them will take forever.