submodule: bump third_party/openthread/repo from 8d39758 to `7f6723…
#1362
| Job | Run time |
|---|---|
| 2m 51s | |
| 2m 51s |
8d39758 to `7f6723…
#1362
| Job | Run time |
|---|---|
| 2m 51s | |
| 2m 51s |