[roll] Roll fuchsia [rust] Turn on no_std for derivative crate

Enable the existing "use_core" feature for the third-party derivative
crate so it can be used in no_std crates.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/662581
Original-Revision: 63509ebc1677a1ed56808f1351b94253c76356ad
GitOrigin-RevId: 8d049ef6c5865738a88f83031ed6f28c14f8301e
Change-Id: Ic04716286bb0d1e57f4cb86271f18ff914d17c88
diff --git a/stem b/stem
index a7b3985..24a91d2 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="c372e5c1c113fa06d31c67cdf96a5253d7744526"/>
+             revision="63509ebc1677a1ed56808f1351b94253c76356ad"/>
   </projects>
   <hooks>
     <hook name="install-environment"