AVFAudio watchOS 9.0 20R5287p to 20R5307f API Differences

AVAudioRecorder.h
Modified AVAudioRecorder.channelAssignments
Declaration
From@property (nonatomic, copy, nullable) NSArray<AVAudioSessionChannelDescription *> *channelAssignments
To@property (nonatomic, copy, nullable) NSArray<AVAudioSessionChannelDescription *> *channelAssignments

AVSpeechSynthesis.h
Added AVSpeechSynthesisVoiceQualityPremium