Bump third_party/openthread/repo from d2d9aff to 922cf5a (#25744)

Bumps [third_party/openthread/repo](https://github.com/openthread/openthread) from `d2d9aff` to `922cf5a`.
- [Release notes](https://github.com/openthread/openthread/releases)
- [Commits](openthread/openthread@d2d9aff...922cf5a)

---
updated-dependencies:
- dependency-name: third_party/openthread/repo
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]