[roll] Roll fuchsia [lowpan-ot-driver][openthread_rust] Disable OpenThread ping auto respond

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/640143
Original-Revision: 320bdfe644308e1b58f9600eb2689fb81825e8d1
GitOrigin-RevId: 5cc2e059c3ec4411d1db46a8b0759e52db111da3
Change-Id: Ia138a2974e09a8495d33ab009c2087ed314009df
diff --git a/stem b/stem
index 8b4ae6f..ca7e006 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="9dd39590673e925cd086f452b7231f575e75428c"/>
+             revision="320bdfe644308e1b58f9600eb2689fb81825e8d1"/>
   </projects>
   <hooks>
     <hook name="install-environment"