[alln][fdio] Move //zircon/system/ulib/fdio to //sdk/lib/fdio

Bug: 54057
Change-Id: I078e301299241dd676b3d82919dda8cebac2b74e
diff --git a/BUILD.gn b/BUILD.gn
index e560891..1291942 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -37,7 +37,7 @@
 
   if (is_fuchsia) {
     deps = [
-      "//zircon/public/lib/fdio",
+      "//sdk/lib/fdio",
     ]
 
     # TODO(47041): UBSan has found an instance of undefined behavior in this target.