[roll] Roll fuchsia [rust] Link dylibs with LTO

This currently only applies to libstd, and automatically to future
dylibs introduced to the build.

We start to properly set `-Zdylib-lto` since https://fxrev.dev/1001661.

Context on linking dylibs in LTO:
rust-lang/rust#31854 (comment)

Original-Bug: 394439548

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1192917
Original-Revision: 4b5e3f08a544eade31464de8eb4adcbef621eabb
GitOrigin-RevId: 90dbb79a815364391c81e76a778ae599be48a5e4
Change-Id: I652f34a3b365cdad8ee2cd6665c2c250309fc158

Author: Jay Zhuang

stem

@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="fff6b3c4354b4e6e72beb3cc9cbe09d893ff8489"/>
+             revision="4b5e3f08a544eade31464de8eb4adcbef621eabb"/>
   </projects>
   <hooks>
     <hook name="install-environment"