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Bump third_party/ot-br-posix/repo from `bd15f71` to `b041fa5` #427

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Job	Run time
Chef - ESP32 CI Examples	9m 37s
Chef - Linux CI Examples	5m 56s
Chef - NRFConnect CI Examples	7m 32s
Chef - Telink CI Examples	7m 15s
	30m 20s