[roll] Roll fuchsia [assembly][diagnostics] Add test for sampler configs

This should have probably been in the previous CL, but the diff
was already very large!

Original-Fixed: 395159893
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1213109
Original-Revision: 198091eb16dd1df64255372e0902575afc21157a
GitOrigin-RevId: 0ac9eb7bb3477b083935a3090f3ced000c7a98fc
Change-Id: Iad05db8d3343664579e18db5c638ad89f7a10b7d
diff --git a/stem b/stem
index 795bd60..5846abf 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="940360f4f7746c8bbb300b694fff9dadb031242a"/>
+             revision="198091eb16dd1df64255372e0902575afc21157a"/>
   </projects>
   <hooks>
     <hook name="install-environment"