Bump third_party/pigweed/repo from `9e4bfb9` to `ba80fb5` #837

Job	Run time
Unit / Integration Tests (main)	3m 8s
Unit / Integration Tests (clang)	5m 36s
Unit / Integration Tests (mbedtls)	1m 10s
Unit / Integration Tests (rotating_device_id)	24s
	10m 18s

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