submodule: bump openthread from `bdb9382` to `992f9c6` (#366)
submodule: bump openthread from `bdb9382` to `992f9c6` (#366)

Bumps [openthread](https://github.com/openthread/openthread) from `bdb9382` to `992f9c6`.
- [Commits](https://github.com/openthread/openthread/compare/bdb938297630578c1393d297b0ee0495a4a3ecdd...992f9c6374d42d5e7172d78710b8755de96fbf89)

---
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-kw41z,openthread/ot-kw41z