Updating to Unity 2019.3.3f1.

Packages/manifest.json

     "com.unity.xr.arfoundation": "3.1.0-preview.4",
     "com.unity.xr.arkit": "3.1.0-preview.4",
     "com.unity.xr.arkit-face-tracking": "3.1.0-preview.4",
-    "com.unity.xr.legacyinputhelpers": "2.0.6",
+    "com.unity.xr.legacyinputhelpers": "2.0.8",
     "com.unity.modules.ai": "1.0.0",
     "com.unity.modules.androidjni": "1.0.0",
     "com.unity.modules.animation": "1.0.0",

ProjectSettings/EditorBuildSettings.asset

     path: Assets/Scenes/ImageTracking/ImageTracking.unity
     guid: e0b018a3c3b5cfd4c8e316706ec0a18c
   - enabled: 0
-    path: Assets/Scenes/LightEstimation/ARKitHDRLightEstimation.unity
-    guid: f7322e09f4047458fbc45af303830f01
-  - enabled: 0
     path: Assets/Scenes/LightEstimation/LightEstimation.unity
     guid: 2f0cbc82480584c258f99f0d9e4ba302
   - enabled: 0

ProjectSettings/ProjectSettings.asset

   xboxOneMonoLoggingLevel: 0
   xboxOneLoggingLevel: 1
   xboxOneDisableEsram: 0
+  xboxOneEnableTypeOptimization: 0
   xboxOnePresentImmediateThreshold: 0
   switchQueueCommandMemory: 0
   switchQueueControlMemory: 16384

ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 2019.3.0f6
-m_EditorVersionWithRevision: 2019.3.0f6 (27ab2135bccf)
+m_EditorVersion: 2019.3.3f1
+m_EditorVersionWithRevision: 2019.3.3f1 (7ceaae5f7503)