[roll] Roll fuchsia [archivist] Optimize debuglog utf8 conversion

There should be a tiny improvement from directly allocating
with Box and using it directly without creating a vector.

Tested: existing tests

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/582845
Original-Revision: 1ed8155e48650a817155c11d0cfd44f8c4cc9033
GitOrigin-RevId: 8fde6a9e3460577cef4a6435f27e8ace72532d14
Change-Id: Ibcd6f11b5fac3178f907bdfe5724f877e1a7081e
diff --git a/stem b/stem
index 4e89753..ce6038f 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="de622974d2bac3df4fd74fc9bfcbffc3364f8762"/>
+             revision="1ed8155e48650a817155c11d0cfd44f8c4cc9033"/>
   </projects>
   <hooks>
     <hook name="install-environment"