Bump third_party/openthread/repo from `aed9cd1` to `2aeb8b8` #105760

Job	Run time
Build on Darwin (clang, python_lib, simulated)	2h 5m 26s
Build on Linux (fake, gcc_release, clang, simulated)	2h 3m 25s
Build on Linux (gcc_debug)	1h 6m 24s
Build on Linux (python_lib)	24m 42s
Build on Linux (python lighting-app)	6m 18s
Build on Linux (coverage)	18m 51s
	6h 5m 6s

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