[roll] Roll fuchsia [ffx][fastboot]: refactor connection_factory to its own crate.

This gets the daemon to not depend on the entire fastboot crate which
has a lot of logic in it (flashing) that the daemon just doesnt need
anymore.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1272966
Original-Revision: cf77336401f1b2403b4e2cb241d15bec7da77368
GitOrigin-RevId: 5249e8851bad4cbcca11a104778c96f7b296d57a
Change-Id: I108726e64a1dc04607f19aff88e7846106c1358e
diff --git a/stem b/stem
index cfcf0bc..912ca84 100644
--- a/stem
+++ b/stem
@@ -8,7 +8,7 @@
              root=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="2274e384911e39fbeaa25017a33b32352647b6fc"
+             revision="cf77336401f1b2403b4e2cb241d15bec7da77368"
              />
   </imports>
   <projects>