[roll] Roll fuchsia [fgsutil] Add cat and cp commands

The cat command will print the contents of a storage blob.
The cp command will write the contents of a storage blob to a
file.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/582524
Original-Revision: 28f917b8d04d7b7e2027b7e7cccb7c4a0143329c
GitOrigin-RevId: df3879fc31ff5b32ac32d4948747ce593748f92e
Change-Id: Id6f0fe8dc4ff07d8a2d077c5eea7b48bfa8ffc96
diff --git a/stem b/stem
index d1d2a5b..95e459d 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="b12afa5952bbdd5a0c1d38b2c206308bb8966209"/>
+             revision="28f917b8d04d7b7e2027b7e7cccb7c4a0143329c"/>
   </projects>
   <hooks>
     <hook name="install-environment"