Bump third_party/openthread/repo from `f1e74a0` to `00076af` #84253

Job	Run time
Unit / Integration Tests (main)	13m 45s
Unit / Integration Tests (clang)	13m 17s
Unit / Integration Tests (mbedtls)	14m 3s
Unit / Integration Tests (rotating_device_id)	13m 58s
Unit / Integration Tests (icd)	43m 48s
	1h 38m 51s

Provide feedback