submodule: bump openthread from `2b726ef` to `697c5e5` (#360)
submodule: bump openthread from `2b726ef` to `697c5e5` (#360)

Bumps [openthread](https://github.com/openthread/openthread) from `2b726ef` to `697c5e5`.
- [Commits](https://github.com/openthread/openthread/compare/2b726ef29f5c6a58a30973d7b8defaa94a4dc4c4...697c5e53a243f94df0d9249da8bb4e73a141cd27)

---
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