[roll] Roll fuchsia [fxt] Use this::error in for Serialization Errors

Since we're in a library, it's good practice to enumerate the error
possibilities instead of returning an opaque error.

Original-Bug: 418845009

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1280564
Original-Revision: d62c29c1fdfac7a3cf2c97e93180328273e3466a
GitOrigin-RevId: 51f4ec568634c9b0ce497198dc47044ab4d3cf28
Change-Id: Ibe8679249259d6ffef103496e4784fd51b2999b3
diff --git a/stem b/stem
index 83afdf3..a706a7f 100644
--- a/stem
+++ b/stem
@@ -7,7 +7,7 @@
             manifest="manifests/platform"
             root=""
             remote="https://fuchsia.googlesource.com/fuchsia"
-            revision="6096c461baa98cafc10b401aea353f1b52f9c8f1"/>
+            revision="d62c29c1fdfac7a3cf2c97e93180328273e3466a"/>
   </imports>
   <projects>
     <project name="cobalt"