[roll] Roll fuchsia Reland "[orchestrate][repo] Orchestrate adopting standalone package server"

This is a reland of commit 8b2b5d129ba94942c80c1b44f1b3a521cb66cf01

The revert was due to a broken dependency in //tools/docsgen which was addressed in fxr/1148896.

This changes orchestrate to use the standalone repository package server.

Original-Bug: 374085877
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1152331
Original-Revision: e5b843ee746fff079d6f072b3d87e37039476fa1
GitOrigin-RevId: 5f444be3d29f3dc5fd3cf3f7b354b18133f96cc4
Change-Id: I7ab9a197ce101a21f36c5abdb06d16a5926405ce

Author: Clayton Wilkinson

stem

@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="812616db175c83201995fbf18d96122b1ca85ec3"/>
+             revision="e5b843ee746fff079d6f072b3d87e37039476fa1"/>
   </projects>
   <hooks>
     <hook name="install-environment"