macOS 12 x86_64 will be replace with macOS 13. Tests will be still run
on macOS 12
Let's keep same Xcode version (14.2) than older macOS (12) has
Task-number: QTBUG-104210
Change-Id: If3e06834156196917001f83ca391a66a6c78e84a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>