IOBluetooth macOS 11.3 Beta 2 to Beta 3 API Differences

BluetoothAssignedNumbers.h
Added kBluetoothHCIVersionCoreSpecification5_1
Added kBluetoothHCIVersionCoreSpecification5_2
Added kBluetoothLMPVersionCoreSpecification5_1
Added kBluetoothLMPVersionCoreSpecification5_2