submodule: bump openthread from `6bb9631` to `db0833f` (#172)
submodule: bump openthread from `6bb9631` to `db0833f` (#172)

Bumps [openthread](https://github.com/openthread/openthread) from `6bb9631` to `db0833f`.
- [Commits](https://github.com/openthread/openthread/compare/6bb9631e804c76a9cd1b61b028239e116d74514c...db0833f73ce08b5a6b7e5781cd778169c6578958)

---
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-b91,openthread/ot-b91