[roll] Roll fuchsia [fxfs] Use blob protocols in device test

Use the blob protocols to read and write blobs to blobfs within the
device test.

Original-Bug: b/337261333
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1433756
Original-Revision: d086eb221079b5c9e33e6d358a2044c4c3654ada
GitOrigin-RevId: ec7290e176ded2cbe1f1066a6a3bfe174f8f605b
Change-Id: I7aa4ff32d292f9dde79240cc2771db8d1836c1df
diff --git a/stem b/stem
index b5dba44..7fd3232 100644
--- a/stem
+++ b/stem
@@ -7,7 +7,7 @@
             manifest="manifests/platform"
             root=""
             remote="https://fuchsia.googlesource.com/fuchsia"
-            revision="8da6868f2558391dd872dacacc3611d3183b9e50"/>
+            revision="d086eb221079b5c9e33e6d358a2044c4c3654ada"/>
   </imports>
   <projects>
     <project name="cobalt"