[roll] Roll fuchsia [ffx][playground] Don't allow treating cf_fs files like folders

Original-Fixed: b/341090436
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1049992
Original-Revision: a9cf26561656317f4273d5bfbcda633fc89e7e6d
GitOrigin-RevId: 6aaa8f3c1698624d2d023d8b5c3e125da4df337f
Change-Id: I5bfb34ba836d2dbc42a3d345a0c659387ff0694a
diff --git a/stem b/stem
index 00c8488..be82421 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="62132a6feb79eb9a335d64415072312a631bc403"/>
+             revision="a9cf26561656317f4273d5bfbcda633fc89e7e6d"/>
   </projects>
   <hooks>
     <hook name="install-environment"