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Bump third_party/perfetto/repo from `b9aca8f` to `38f6220` #1890

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Run time

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Job	Run time
Chef - ESP32 CI Examples	2m 6s
Chef - Linux CI Examples	5m 5s
Chef - NRFConnect CI Examples	2m 35s
Chef - Telink CI Examples	5m 23s
	15m 9s