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Bump third_party/pigweed/repo from `1f12d06` to `e45b2e6` #1843

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Run time

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Job	Run time
Chef - ESP32 CI Examples	8m 56s
Chef - Linux CI Examples	5m 49s
Chef - NRFConnect CI Examples	6m 31s
Chef - Telink CI Examples	6m 9s
	27m 25s