[roll] Roll fuchsia [netstack] Prepare for go runtime exposing sysmon

Prepare for go runtime changing the contract on the exposed threads
channel.

Update the integration test so it fails instead of timing out in case of
errors during message parsing.

Original-Bug: 122472
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/809107
Original-Revision: b418d616650ea5ce96526a50700f934197391a11
GitOrigin-RevId: e213d42b91ad488be7129caf0fb0a7c9eeae8d8a
Change-Id: I3db038435544c23ead8a18279682be1c8069e7f6
diff --git a/stem b/stem
index 8ae24f4..1f3618e 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="9cac03580c811cc2fb2cf7376b26e76586d904c6"/>
+             revision="b418d616650ea5ce96526a50700f934197391a11"/>
   </projects>
   <hooks>
     <hook name="install-environment"