[roll] Roll fuchsia [fx][bazel2gn] Add --no-build and -h|--help

Original-Bug: 400557011
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1222647
Original-Revision: 712fe50b6893bcdd033dea6c411d08af64fdfcde
GitOrigin-RevId: 32871c07019764729f0ad57525fdcb7c06592201
Change-Id: I1a7659a12519ae559b78878deb2b6033cebb3d40

stem

diff --git a/stem b/stem
index 5725bdc..3da7fe7 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="881c77490b9c1cca8086d1654439bfe848a2aee9"/>
+             revision="712fe50b6893bcdd033dea6c411d08af64fdfcde"/>
   </projects>
   <hooks>
     <hook name="install-environment"