moved from staging to production

Packages/manifest.json

 {
   "dependencies": {
-    "com.unity.xr.arcore": "1.0.0-preview.14",
-    "com.unity.xr.arfoundation": "1.0.0-preview.10",
-    "com.unity.xr.arkit": "1.0.0-preview.9"
-  },
-  "registry": "https://staging-packages.unity.com"
+    "com.unity.xr.arcore": "1.0.0-preview.16",
+    "com.unity.xr.arkit": "1.0.0-preview.11",
+    "com.unity.xr.arfoundation": "1.0.0-preview.12"
+  }
 }