Update version code to v1.13.4.0

Author: lawwong

Assets/HTC.UnityPlugin/ViveInputUtility/Scripts/VIUVersion.cs

@@ -6,6 +6,6 @@ namespace HTC.UnityPlugin.Vive
 {
     public static class VIUVersion
     {
-        public static readonly Version current = new Version("1.13.3.2");
+        public static readonly Version current = new Version("1.13.4.0");
     }
 }

Assets/HTC.UnityPlugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.htc.upm.vive-input-utility",
-  "version": "1.13.3-preview.2",
+  "version": "1.13.4",
   "displayName": "VIVE Input Utility",
   "description": "The VIVE Input Utility (VIU) is a toolkit for developing VR experiences in Unity, especially with the VIVE/VIVE Pro but also targeting many platforms from a common code base including Oculus Rift, Rift S Go, Quest, Google Daydream, VIVE Wave SDK (e.g. VIVE Focus standalone) and additional VR platforms as supported by Unity such as Microsoft's 'Mixed Reality' VR headsets and more.\n\nCompatible with SteamVR 2.4.0+ and Oculus Integration 16.0+.\n\nView license:\nhttps://github.com/ViveSoftware/ViveInputUtility-Unity/blob/develop/LICENSE.md",
   "keywords": [