I have an old iPhone SE of 2016. I read about a demand from Apple that all new iOS apps from some given date must start being developed with iOS 18 SDK. My iPhone's final iOS update was 15.x(something) but until the summer of 2024 that I developed my last iOS app was working flawlessly. My question is will it still continue to work with this need from Apple? (I only use notifications in my apps and iStore but intend to go into ads too)