Update ARCore package version to latest

Packages/manifest.json

     "com.unity.purchasing": "2.0.6",
     "com.unity.textmeshpro": "2.0.1",
     "com.unity.timeline": "1.0.0",
-    "com.unity.xr.arcore": "2.2.0-preview.1",
+    "com.unity.xr.arcore": "2.2.0-preview.2",
     "com.unity.xr.arfoundation": "2.2.0-preview.3",
     "com.unity.xr.arkit": "2.2.0-preview.3",
     "com.unity.xr.arkit-face-tracking": "1.1.0-preview.3",