[roll] Roll fuchsia [power-broker][inspect] Merge the synthetic graph into regular one

Instead of having a separate graph, we can use the same regular graph
and just store a synthetic:bool field.

Original-Fixed: 404631762
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1236384
Original-Revision: fa78960701f9c185e5eba24399d0d2d0761c71d5
GitOrigin-RevId: 026b84160117ffe20691bbccb931568e92e31a54
Change-Id: I9dc769a2a163a2c41c52903f57cb1acf5a845a13
diff --git a/stem b/stem
index b761892..6c53552 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="8e79ff0020a3e077ff3e853cf2c741b66194daea"/>
+             revision="fa78960701f9c185e5eba24399d0d2d0761c71d5"/>
   </projects>
   <hooks>
     <hook name="install-environment"