submodule: bump third_party/openthread/repo from 9fd1da5 to 8bc2504
#3947
| Job | Run time |
|---|---|
| 9m 30s | |
| 9m 30s |
9fd1da5 to 8bc2504
#3947
| Job | Run time |
|---|---|
| 9m 30s | |
| 9m 30s |