Build Chef CI examples on all platforms

Bump third_party/openthread/repo from `a8afffb` to `8243591` #455

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Chef - Linux CI Examples	6m 29s
Chef - ESP32 CI Examples	8m 50s
Chef - NRFConnect CI Examples	8m 2s
Chef - Telink CI Examples	8m 0s
	31m 21s