[roll] Roll fuchsia [rust-3p] Update num to 0.4.3

This includes the num-* dependencies.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1264406
Original-Revision: 32f4642087599bdeecdafb5cf333f0fea747ed27
GitOrigin-RevId: 8ea62db9621736aa049db49cf1a7ab4e97d66830
Change-Id: Idb0a8c8e83348fffe6f9e601135cbb47aa78b63d
diff --git a/stem b/stem
index f3e2aba..261a13c 100644
--- a/stem
+++ b/stem
@@ -8,7 +8,7 @@
              root=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="a0781d33abd8d6dcc85817e1aac782ecfa9216bb"
+             revision="32f4642087599bdeecdafb5cf333f0fea747ed27"
              />
   </imports>
 </manifest>