submodule: bump openthread from `3b79cb0` to `74f5ab5` (#208)
submodule: bump openthread from `3b79cb0` to `74f5ab5` (#208)

Bumps [openthread](https://github.com/openthread/openthread) from `3b79cb0` to `74f5ab5`.
- [Commits](https://github.com/openthread/openthread/compare/3b79cb0d084edc00c7ec8a29f97b0e8a40bbe18c...74f5ab5c9f434c4ffe44c580be40b7ff14e7f0e9)

---
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-kw41z,openthread/ot-kw41z