[roll] Roll fuchsia [bt][profiles] Migrate unit tests to v2

Migrate trivial unit tests in profiles/ to v2. bt-a2dp-tests requires
additional capabilities + requires the v1 launcher, so will be
migrated in a follow up CL.

Original-Bug: 70955
Test: fx test bt-avrcp-target-tests, bt-avrcp-tests,
bt-hfp-audio-gateway-tests, bt-rfcomm-tests

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/489942
Original-Revision: 8604a5206a980bed242b315fd1c84081823ebbfc
GitOrigin-RevId: 4764641fc81a10e530fa7079b32ea1a3fc586885
Change-Id: I0d235e5425e27111cc6d692568e71678607df827
diff --git a/stem b/stem
index 4fca73b..fe8d3de 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="e67febe6dbde880bf9632fbe0540cf9251dcfd0a"/>
+             revision="8604a5206a980bed242b315fd1c84081823ebbfc"/>
   </projects>
   <hooks>
     <hook name="install-environment"