[roll] Roll fuchsia [assembly] Thread roles in scrutiny goldens

The thread roles file is now a platform path and present in the
platform scrutiny goldens.

Original-Bug: 359871033
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1100894
Original-Revision: 2b1d18d06b79015e2daf6498d56d9734f950643c
GitOrigin-RevId: ecb73e4dcd20b8e9dfb8a04260e5c5fa7ec2854e
Change-Id: I9d30fd07bc31d421597b3403a363c2c3f3eec55f

Author: Aidan Wolter

stem

@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="3963b2bac66d31d1f25d6f0e78b8c06776e9b5a0"/>
+             revision="2b1d18d06b79015e2daf6498d56d9734f950643c"/>
   </projects>
   <hooks>
     <hook name="install-environment"