submodule: bump openthread from `bcf9d80` to `e64ba13` (#351)
submodule: bump openthread from `bcf9d80` to `e64ba13` (#351)

Bumps [openthread](https://github.com/openthread/openthread) from `bcf9d80` to `e64ba13`.
- [Commits](https://github.com/openthread/openthread/compare/bcf9d8058ec1452ee574817604d1d33afcd290b1...e64ba13faa865aa7febd5cb7dc7eb52ff19a2c5c)

---
updated-dependencies:
- dependency-name: openthread
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
openthread/ot-nxp,openthread/ot-nxp,openthread/ot-nxp