[roll] Roll fuchsia [scrutiny] Add ffx scrutiny list packages.

This change adds a new command to the Scrutiny FFX interface which
allows you to list all of the fuchsia packages in the current build.
This is intented to be used as a discovery mechanism for the the
ffx scrutiny extract package command which allows you to extract a
package from a given package url.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/551843
Original-Revision: de0dfece13242072658cbe1b3054e239ca8f02fb
GitOrigin-RevId: fc10d60d3045b18c8757bae6f4aa190556f30d95
Change-Id: I64c28a2995d7dcd0179ff01cf195360dd3fd28e8
diff --git a/stem b/stem
index 2ddc50c..eadfa04 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="94d10c1bf38bc9d4af8c1d05c68acd1130768d1b"/>
+             revision="de0dfece13242072658cbe1b3054e239ca8f02fb"/>
   </projects>
   <hooks>
     <hook name="install-environment"