[roll] Roll fuchsia [security] Add system-update-checker to fuchsia.pkg.PackageResolver allowlist.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/587906
Original-Revision: fe22c991011195353dd3b9db4ebb3c75ba009a03
GitOrigin-RevId: 3db962d49fddc564eac21a41c8cc5c39bf3cb10b
Change-Id: Iac1394da6b2965fb82e25e9eadca44f7f12d70c5
diff --git a/stem b/stem
index 05b557f..521604b 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="af93e852c0e535b36ac8105de5a2a15a1e42e27c"/>
+             revision="fe22c991011195353dd3b9db4ebb3c75ba009a03"/>
   </projects>
   <hooks>
     <hook name="install-environment"