[roll] Roll fuchsia [bt][fidl] Add GattError type to fuchsia.bluetooth.test

GattError contains common errors that methods in the Gatt protocol might
want to pass.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1574357
Original-Revision: d3ee6898e1bd0f86a169fa75289c753194cdcb01
GitOrigin-RevId: e23796e609ca742e0d833d831c576f24d29445ed
Change-Id: Ifafbcaf0b400d4bc02c311c212bba95995e8c2f9

stem

diff --git a/stem b/stem
index f1fe3db..34eb1a1 100644
--- a/stem
+++ b/stem
@@ -8,6 +8,6 @@
             manifest="manifests/platform"
             root=""
             remote="https://fuchsia.googlesource.com/fuchsia"
-            revision="ac8a9be9c748bf47483a115b8dcc0f773d4a0020"/>
+            revision="d3ee6898e1bd0f86a169fa75289c753194cdcb01"/>
   </imports>
 </manifest>