Bump third_party/openthread/repo from `aed9cd1` to `2aeb8b8` #101627

Job	Run time
Unit / Integration Tests (main)	21m 21s
Unit / Integration Tests (clang)	22m 1s
Unit / Integration Tests (mbedtls)	21m 9s
Unit / Integration Tests (rotating_device_id)	21m 31s
Unit / Integration Tests (icd)	50m 40s
	2h 16m 42s

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