[roll] Roll fuchsia [wlan][policy] add `run_while` helper

test: test-only change
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/781471
Original-Revision: 6c434912a38b833ef6d52fa8b09ebf8688bc0cf5
GitOrigin-RevId: e316016b767976793ee21bf9b9df7d1f86f33dfe
Change-Id: I2fa30570bbbc554bfbf992ef173982c14e87c89f
diff --git a/stem b/stem
index 72810d1..bafe663 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="508a47adc83049b4d1f43fb2e74772f1963761d0"/>
+             revision="6c434912a38b833ef6d52fa8b09ebf8688bc0cf5"/>
   </projects>
   <hooks>
     <hook name="install-environment"