submodule: bump third_party/openthread/repo from f07bcc2 to `9f6921…
#5699
| Job | Run time |
|---|---|
| 49m 18s | |
| 49m 18s |
f07bcc2 to `9f6921…
#5699
| Job | Run time |
|---|---|
| 49m 18s | |
| 49m 18s |