Bump third_party/openthread/repo from `f67ca58` to `c7a3a19` (Auto-merged by bot)

Bumps [third_party/openthread/repo](https://github.com/openthread/openthread) from `f67ca58` to `c7a3a19`.
- [Release notes](https://github.com/openthread/openthread/releases)
- [Commits](https://github.com/openthread/openthread/compare/f67ca58c824e4e11e480e80020371612d2f5cb15...c7a3a19f5accb8ebbc58c403fd2f7a7254cf2dbc)

---
updated-dependencies:
- dependency-name: third_party/openthread/repo
  dependency-version: c7a3a19f5accb8ebbc58c403fd2f7a7254cf2dbc
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/third_party/openthread/repo b/third_party/openthread/repo
index f67ca58..c7a3a19 160000
--- a/third_party/openthread/repo
+++ b/third_party/openthread/repo
@@ -1 +1 @@
-Subproject commit f67ca58c824e4e11e480e80020371612d2f5cb15
+Subproject commit c7a3a19f5accb8ebbc58c403fd2f7a7254cf2dbc