[roll] Roll fuchsia [power-broker][inspect] Keep valid_levels in the rm_element event

As described in go/fuchsia-power-broker-obs-improve so tools get the
information they need.

Original-Fixed: 404934494
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1237426
Original-Revision: a0ce022b55459796976fa32c8ffe1765cb3d3cee
GitOrigin-RevId: 51472d8f598484f8e625eb81c03cb146a0d79a2a
Change-Id: Iac0cecd7d089fce45f16b1c36cef25d0cfbcdc08
diff --git a/stem b/stem
index 59db7e7..4517763 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="2d0df75e5ca72eac32da09dd7ce5fe73e1973993"/>
+             revision="a0ce022b55459796976fa32c8ffe1765cb3d3cee"/>
   </projects>
   <hooks>
     <hook name="install-environment"