[roll] Roll fuchsia Reland "[build] Enable LTO by default in non-debug builds"

This reverts commit 93585840ad132f9f961cbdf084f6ab5db61e25e8.

Reason for revert: We fixed the issue in the SDK rollers by rolling out LTO with FatLTO.

Original change's description:
> Revert "[build] Enable LTO by default in non-debug builds"
>
> This reverts commit f2eebb7e9521ccf0c7d702c2630f4a41c23682ec.
>
> Reason for revert: Seems to have broken SDK users
>
> Original change's description:
> > [build] Enable LTO by default in non-debug builds
> >
> > This patch turns on LTO by default in non-debug builds
> > as a followup patch to https://fxrev.dev/1001661.
> >
> > Original-Bug: 42182779
> > Run-All-Tests: true
> > Cq-Include-Trybots: luci.turquoise.global.try:run-postsubmit-tryjobs
> > Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1029892
> > Size-Review: Aaron Wood <aaronwood@google.com>
>
> Original-Bug: 42182779, 339832780
> Cq-Include-Trybots: luci.turquoise.global.try:run-postsubmit-tryjobs
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1046572

Original-Bug: 42182779, 339832780
Cq-Include-Trybots: luci.turquoise.global.try:run-postsubmit-tryjobs
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1045571
Size-Review: James Sullivan <jfsulliv@google.com>
Original-Revision: d9d36b996ccc29b289e15e3d93a6b41ebdd6dc0c
GitOrigin-RevId: 365a75e3e94c453019457841adf5b9be92c5e110
Change-Id: Iaa1cef5a06735ddd897c1c6469d841a3b3ed3d72
diff --git a/stem b/stem
index 6be6795..54f7606 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="cfd7a2d99eadd656a4081e3ffa349f20b087bd5a"/>
+             revision="d9d36b996ccc29b289e15e3d93a6b41ebdd6dc0c"/>
   </projects>
   <hooks>
     <hook name="install-environment"