[roll] Roll fuchsia [inspect_validator] Remove @transitional

Added in commit 9fde03ad4e1a4632c7eecd6816bd111ebd67aacd, these
annotations are a misuse of the attribute, which is intended to
facilitate transitions involving out-of-tree implementations; this
protocol is not implemented by clients out of tree.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/672790
Original-Revision: aa6397ad7d3a2e83e3d96ab57b77fc1e8547be7c
GitOrigin-RevId: 9a4067417a1dfd6c3852f8ba2da6e167be85f79f
Change-Id: I96546bb67c847ed4c8f8a4cb78de05d8d30bdbd1
diff --git a/stem b/stem
index 074e277..29fbe2d 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="209b6397bc07a74b93f3c903313b106e369c65e8"/>
+             revision="aa6397ad7d3a2e83e3d96ab57b77fc1e8547be7c"/>
   </projects>
   <hooks>
     <hook name="install-environment"