Bump third_party/openthread/repo from `f1e74a0` to `4dae833` #1313

Job	Run time
Build on Linux (fake, gcc_release, clang, simulated)	1h 28m 6s
Build on Linux (gcc_debug)	48m 27s
Build on Linux (python_lib)	19m 23s
Build on Darwin (clang, python_lib, simulated)	1h 54m 18s
Build on Linux (coverage)	10m 2s
Build on Linux (python lighting-app)	6m 13s
	4h 46m 29s

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