[roll] Roll fuchsia [diagnostics] Remove custom `downcast_raw` impl
`Subscriber` provides exactly this function impl by default, and there
are some issues surrounding the soundness of implementing this ourselves
(see https://github.com/tokio-rs/tracing/issues/1171). This CL just
removes the custom impl so we fall back to the default impl.
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/910093
Original-Revision: 897cbd08a8542e64778775dba3b8b52d965d9951
GitOrigin-RevId: e0c3d1fbdf37e41e1e816a35be1312ea87f23909
Change-Id: I9f9a5f375da89772144962a4a88e6fcfc34170f7
diff --git a/stem b/stem
index 1b40e39..fb0cdea 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="497c685bd75c3e692a49683f581064ac1166632c"/>
+ revision="897cbd08a8542e64778775dba3b8b52d965d9951"/>
</projects>
<hooks>
<hook name="install-environment"