[roll] Roll fuchsia [rust-3p] Update munge to 0.4.5

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1258704
Original-Revision: ff7470cf68cba0bf73c65f9401fe837576a37669
GitOrigin-RevId: 13341d6b01f5185ddec75174a8815c30c3bb0dfc
Change-Id: I5c2bfbc6be83b9a2cf702e6a29a8321f6be81928

stem

diff --git a/stem b/stem
index b92fec5..0946986 100644
--- a/stem
+++ b/stem
@@ -8,7 +8,7 @@
              root=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="b676bd2ad7f3cecca38a3958358ae8485984bdc4"
+             revision="ff7470cf68cba0bf73c65f9401fe837576a37669"
              />
   </imports>
 </manifest>