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Bump third_party/pigweed/repo from `1f12d06` to `8ee5e98` #1903

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Run time

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Job	Run time
Chef - ESP32 CI Examples	2m 14s
Chef - Linux CI Examples	1m 53s
Chef - NRFConnect CI Examples	2m 19s
Chef - Telink CI Examples	2m 46s
	9m 12s