Drive-by downloads of Install macOS Monterey

[Ryan Schmidt]

I noticed copies of the Install macOS Monterey application on both the Catalina 
and Big Sur MacPorts buildbot build machines. I've of course never requested 
the download of these installers on those systems and they are configured not 
to update automatically and not to download new updates automatically. If you 
have machines running Catalina or Big Sur, you might check to see if you too 
have an unwanted Install macOS app in your Applications folder that you can 
delete to save space.