AVFoundation iOS 13.0 Beta 4 to Beta 5 API Differences

../Frameworks/AVFAudio.framework/Headers/AVAudioUnitComponent.h
Added AVAudioUnitComponentManagerRegistrationsChangedNotification
../Frameworks/AVFAudio.framework/Headers/AVSpeechSynthesis.h
Removed AVSpeechSynthesizer.synthesizerAudioSession
Added AVSpeechSynthesizer.usesApplicationAudioSession