submodule: bump openthread from `095f530` to `c73db3f` (#306)
submodule: bump openthread from `095f530` to `c73db3f` (#306)

Bumps [openthread](https://github.com/openthread/openthread) from `095f530` to `c73db3f`.
- [Commits](https://github.com/openthread/openthread/compare/095f530bd7ef1a6d012179a087514757141e8e6e...c73db3ff2f2c8e5c57b335567091c1e5b6911c20)

---
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