Moving officially targeted version to iOS13+
Moving officially targeted version to iOS13+

audiokit/AudioKit,adamnemecek/AudioKit,eljeff/AudioKit,eljeff/AudioKit,eljeff/AudioKit,eljeff/AudioKit,adamnemecek/AudioKit,adamnemecek/AudioKit,audiokit/AudioKit,adamnemecek/AudioKit,audiokit/AudioKit,audiokit/AudioKit