submodule: bump openthread from `43c66a3` to `16c927e` (#378)
submodule: bump openthread from `43c66a3` to `16c927e` (#378)

Bumps [openthread](https://github.com/openthread/openthread) from `43c66a3` to `16c927e`.
- [Commits](https://github.com/openthread/openthread/compare/43c66a3d5f73857b95ef5448cade3442d4449277...16c927ea1c3b7c3c83c68dc6d0d0541d569ab60d)

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

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

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