submodule: bump openthread from 4e8f3c0 to 31e512a (#892)
#1897
| Job | Run time |
|---|---|
| 24m 10s | |
| 25m 0s | |
| 49m 10s |
4e8f3c0 to 31e512a (#892)
#1897
| Job | Run time |
|---|---|
| 24m 10s | |
| 25m 0s | |
| 49m 10s |