submodule: bump openthread from `02d9ac3` to `d8ad60f` (#101)
submodule: bump openthread from `02d9ac3` to `d8ad60f` (#101)

Bumps [openthread](https://github.com/openthread/openthread) from `02d9ac3` to `d8ad60f`.
- [Commits](https://github.com/openthread/openthread/compare/02d9ac302dc577958f951bd8e99e1de12671e598...d8ad60ff6db7a3af92674ce508c5dfc31165d047)

---
updated-dependencies:
- dependency-name: openthread
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
openthread/ot-cc13x2-cc26x2,openthread/ot-cc13x2-cc26x2