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Bump third_party/perfetto/repo from `b9aca8f` to `31cb5bf` #181

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Run time

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Job	Run time
Chef - Linux CI Examples	5m 46s
Chef - ESP32 CI Examples	8m 58s
Chef - NRFConnect CI Examples	6m 37s
Chef - Telink CI Examples	6m 38s
	27m 59s