ng update

Angular's powerful CLI provides the ng update command to perform a basic update to the current stable release of the core framework and CLI.

ng update @angular/core @angular/cli

Angular recommends to update to the latest patch version, as it contains fixes released since the initial major release, The following command would take you to the latest 15.x.x version and use that to update

ng update @angular/core@^15 @angular/cli@^15

To update to the next beta or pre-release version, use the --next option

ng update @angular/core @angular/cli --next