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Bump third_party/pigweed/repo from `ce0e3e2` to `a7362ec` #1269

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Run time

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Job	Run time
Chef - ESP32 CI Examples	14m 2s
Chef - Linux CI Examples	5m 50s
Chef - NRFConnect CI Examples	12m 19s
Chef - Telink CI Examples	12m 5s
	44m 16s