macOS Catalina 10.15.5

Apple’s has brought back the nagging — you can no longer ignore major macOS updates

After installing yesterday's security updates for older macOS versions, people can no longer get rid of that pesky macOS Catalina upgrade reminder with a Terminal command. If you've already installed the macOS Catalina 10.15.5, avoiding those nagging macOS update notifications no longer works because ignoring major macOS software releases has been officially deprecated.