[roll] Roll fuchsia [connectivity][netemul] Fix -Wimplicit-int-conversion errors

New versions of clang will start warning about more cases when the
conversion happens.

Original-Bug: 402753152
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1238869
Original-Revision: efcd15393b6582779e25d00337e521a4aad91ff5
GitOrigin-RevId: aa9fa043852e61a18fe43095823f342b8eab86f8
Change-Id: I9c33c0c286133a2c66b3e20119aac1a59d8756e2
diff --git a/stem b/stem
index 661245f..1fcc43e 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="b470f93e01a5b16499ebd7be6f9371ee8bddf2c0"/>
+             revision="efcd15393b6582779e25d00337e521a4aad91ff5"/>
   </projects>
   <hooks>
     <hook name="install-environment"