Build Chef CI examples on all platforms

Bump third_party/pigweed/repo from `1f12d06` to `3a2d151` #1932

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Chef - ESP32 CI Examples	2m 23s
Chef - Linux CI Examples	1m 45s
Chef - NRFConnect CI Examples	2m 17s
Chef - Telink CI Examples	2m 46s
	9m 11s