Bump third_party/openthread/repo from `aed9cd1` to `2aeb8b8` #89701

Job	Run time
Test Suites - Linux (no-ble-tsan-clang)	1h 54m 36s
REPL Tests - Linux	1h 35m 48s
Test Suites - Darwin (no-ble-asan-clang)	1h 29m 18s
REPL Tests - Darwin	0s
Test Suites - Darwin (no-ble-tsan-clang)	2h 12m 13s
	7h 11m 55s

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