submodule: bump openthread from 8b906eb to 51ab865 (#707)

dependabot[bot] · web-flow · commit feed3f2e343a · 2024-03-19T20:22:29.000-07:00
Bumps [openthread](https://github.com/openthread/openthread) from `8b906eb` to `51ab865`. - [Commits](openthread/openthread@8b906eb...51ab865) --- updated-dependencies: - dependency-name: openthread 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/openthread b/openthread
@@ -1 +1 @@
-Subproject commit 8b906eb4679ce811ba32c260ddc0654f73f3b362
+Subproject commit 51ab865600d73c78eab0900d2790f56ef6631a20
