[roll] Roll fuchsia [debugger][e2e] Update async_backtrace output

This updates the expected output of the async_backtrace script to no
longer expect to see the "Finished" task after changes landed in
https://fxrev.dev/1108273.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1110832
Original-Revision: 4cffb47da0f2bebe20424db1446f1b888e81b639
GitOrigin-RevId: 4fe985fd31648ceefc8d423bd17dba31216f030b
Change-Id: If5050c9c3de3f40cd0294fd78740da330b4aa5af
diff --git a/stem b/stem
index 4164999..4275486 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="5d5f4ed29fb99d278282b9343618b3fbe816e9bf"/>
+             revision="4cffb47da0f2bebe20424db1446f1b888e81b639"/>
   </projects>
   <hooks>
     <hook name="install-environment"