[roll] Roll fuchsia [vfs] remove some deprecated_open refs

Original-Bug: 416094408
Test: fx test vfs-tests
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1278052
Original-Revision: 6a497e21a00e1a184224e6c96ec676d16ba89c03
GitOrigin-RevId: 23db3b9f5201d2c18a961284909de1a18950072c
Change-Id: Id48a7c7fb59da25572ca07d4db0cb81984e6b09e
diff --git a/stem b/stem
index 7681c15..e9a1e64 100644
--- a/stem
+++ b/stem
@@ -8,7 +8,7 @@
              root=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="d1de430e506699cf4e0a23f58e4c0b012958bc13"
+             revision="6a497e21a00e1a184224e6c96ec676d16ba89c03"
              />
   </imports>
   <projects>