submodule: bump openthread from `16798fd` to `efa5682` (#174)
submodule: bump openthread from `16798fd` to `efa5682` (#174)

Bumps [openthread](https://github.com/openthread/openthread) from `16798fd` to `efa5682`.
- [Commits](https://github.com/openthread/openthread/compare/16798fdcc026455ad69edb48de968babe7f3a50b...efa5682d6019e762f95016b4c59583eda8b7c43e)

---
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-qorvo,openthread/ot-qorvo,openthread/ot-qorvo