submodule: bump openthread from `eca7675` to `018f54f` (#239)
submodule: bump openthread from `eca7675` to `018f54f` (#239)

Bumps [openthread](https://github.com/openthread/openthread) from `eca7675` to `018f54f`.
- [Commits](https://github.com/openthread/openthread/compare/eca7675acbc0cf9c62a7c8ad96eb555ac9edb622...018f54f71b059bf338247595eb1f6a6710e3d0c9)

---
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