submodule: bump openthread from `daf2ad7` to `6f537ca` (#92)
submodule: bump openthread from `daf2ad7` to `6f537ca` (#92)

Bumps [openthread](https://github.com/openthread/openthread) from `daf2ad7` to `6f537ca`.
- [Commits](https://github.com/openthread/openthread/compare/daf2ad7c245f947cadb2093af74ba9d121525473...6f537ca34a56b26ac380e9104b4db6e109427b41)

---
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-qorvo,openthread/ot-qorvo,openthread/ot-qorvo