[roll] Roll fuchsia [fidlc] Enable -Wno-vla-cxx-extension

This enables -Wno-vla-cxx-extension which warns on VLA use in C++. There
was only one use in fidlc, which I changed to std::vector.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/942740
Original-Revision: 6655dcac77e9f3fefbe8f16abff7f32ff54eb0b3
GitOrigin-RevId: 69a171c7920f9463be87a1c2f89ab63e5f6a9df1
Change-Id: I29386efbacab152ff46f5c0506bdec12bb1e8bbc
diff --git a/stem b/stem
index ad09ec8..ef65ca3 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="11a9360b0347b4fe69c2ab78e8b9548e4d855059"/>
+             revision="6655dcac77e9f3fefbe8f16abff7f32ff54eb0b3"/>
   </projects>
   <hooks>
     <hook name="install-environment"