[roll] Roll fuchsia [rust] Removed unnecessary muts to fix toolchain roll

Original-Bug: 412373697
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1257707
Original-Revision: 3ab43f1928c1c8696caf1fd99efdbea3a6b4ed6e
GitOrigin-RevId: f44132177523d109a82e2281156c9129240cb9a6
Change-Id: Id5eba3d4022091a46ebc53118f1ae7ab98273fae
diff --git a/stem b/stem
index 2ce60ed..05e41f8 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="225df47cd404bdc2e470b5152a27dc42936c4f3b"
+             revision="3ab43f1928c1c8696caf1fd99efdbea3a6b4ed6e"
              />
   </projects>
   <hooks>