submodule: bump openthread from `137c401` to `69ed42f` (#6)
submodule: bump openthread from `137c401` to `69ed42f` (#6)

Bumps [openthread](https://github.com/openthread/openthread) from `137c401` to `69ed42f`.
- [Commits](https://github.com/openthread/openthread/compare/137c40136cab33eaa32066223f0a1b4838ed225d...69ed42f4910253592b2a827a7b04b658b16fc384)

---
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>
Infineon/ot-ifx-release,openthread/ot-ifx,openthread/ot-ifx,Infineon/ot-ifx-release,Infineon/ot-ifx-release,openthread/ot-ifx