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Bump third_party/openthread/repo from `eaa6261` to `652e3f2` #873

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Run time

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Job	Run time
Chef - ESP32 CI Examples	12m 27s
Chef - Linux CI Examples	9m 12s
Chef - NRFConnect CI Examples	17m 42s
Chef - Telink CI Examples	13m 2s
	52m 23s