[roll] Roll fuchsia [submodules] Update submodule pins

This change synchronizes submodule revisions with Jiri manifest state.
These revisions have no bearing on Fuchsia builds or local checkouts
and are only used by Code Search.

If you wish to update a repository's revision, update the corresponding
Jiri manifest and the change will automatically be synchronized to
submodules.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1246225
Original-Revision: 6c1e9216af273581975cc477189cf37111c6f2dc
GitOrigin-RevId: b3e5d1d92680a08a3de59c9991b79fceda5d31ce
Change-Id: Ia31b42757649e96a251af03f1c95219b3d378ade
diff --git a/stem b/stem
index beadca9..498554a 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="f4269614a343d8008d33cc4b55bdf1e131a06c81"
+             revision="6c1e9216af273581975cc477189cf37111c6f2dc"
              />
   </projects>
   <hooks>