Build Chef CI examples on all platforms

Bump third_party/ot-br-posix/repo from `bd15f71` to `e24a709` #3501

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Chef - ESP32 CI Examples	8m 55s
Chef - Linux CI Examples	5m 32s
Chef - NRFConnect CI Examples	6m 41s
Chef - Telink CI Examples	6m 53s
	28m 1s