[roll] Roll fuchsia [fidl][python] Support FIDL strings

Original-Bug: 355717613
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1192896
Original-Revision: 81efd6d51e742a88381f6f53f0c3493e3efa24f3
GitOrigin-RevId: cd878a081c009e9a8a11025da9515ba7896362eb
Change-Id: I021b2c601661a595d4dbea9a1a7cffc90c85f423
diff --git a/stem b/stem
index 1d4ca0a..a23124b 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="5260c33dc59e849f910c001bfa2109714a7effff"/>
+             revision="81efd6d51e742a88381f6f53f0c3493e3efa24f3"/>
   </projects>
   <hooks>
     <hook name="install-environment"