[roll] Roll fuchsia [codec][test] Clean up usages of Banjo with mock-i2c

These Banjo usages were missed in previous changes. Convert them to FIDL
so mock-i2c can drop support for Banjo.

Original-Bug: 98515
Test: CQ
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/689589
Original-Revision: d7ee60df06fb75142b6640a2afaf877d689dd7b5
GitOrigin-RevId: 8d646db827c8321c9961c71b65f533be60bc3d8b
Change-Id: I06bcde1db075ec36bda84e3056b4a697e3aa81ff
diff --git a/stem b/stem
index d0c3108..35220ec 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="eb3ecc8730f6a1247778e91fefc0680295a88044"/>
+             revision="d7ee60df06fb75142b6640a2afaf877d689dd7b5"/>
   </projects>
   <hooks>
     <hook name="install-environment"