Add support for Xcode 16 #675

Job	Run time
Test pending_operations on ubuntu-22.04	52s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-13 with Xcode 14.3.1 and Flutter 3.19.1	52s
Test sign_in_with_apple/sign_in_with_apple on ubuntu-22.04	53s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-13 with Xcode 14.3.1 and Flutter 3.24.3	52s
Test sign_in_with_apple/sign_in_with_apple_platform_interface on ubuntu-22.04	55s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-14 with Xcode 14.3.1 and Flutter 3.19.1	1s
Test state_queue_test on ubuntu-22.04	51s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-14 with Xcode 14.3.1 and Flutter 3.24.3	1s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-14 with Xcode 15.2 and Flutter 3.19.1	1s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-14 with Xcode 15.2 and Flutter 3.24.3	1s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-14 with Xcode 16.0 and Flutter 3.24.3	1s
Build sign_in_with_apple/sign_in_with_apple iOS on macos-15 with Xcode 16.0 and Flutter 3.24.3	1s
Test state_queue on ubuntu-22.04	54s
Test with_bloc on ubuntu-22.04	52s
Test pending_operations on macos-14	1s
Test sign_in_with_apple/sign_in_with_apple on macos-14	1s
Test sign_in_with_apple/sign_in_with_apple_platform_interface on macos-14	1s
Test state_queue_test on macos-14	1s
Test state_queue on macos-14	1s
Test with_bloc on macos-14	1s
	7m 13s

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