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Bump third_party/pigweed/repo from `9e4bfb9` to `45527d2` #810

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Run time

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Job	Run time
Chef - ESP32 CI Examples	14m 29s
Chef - Linux CI Examples	10m 45s
Chef - NRFConnect CI Examples	15m 37s
Chef - Telink CI Examples	11m 41s
	52m 32s