unity: Set target to Unity 6.

Author: freezy

Runtime/Packaging.meta

@@ -0,0 +1,7 @@
+namespace Packaging
+{
+	public class VisualScriptingRefs
+	{
+		
+	}
+}

Runtime/Packaging/VisualScriptingRefs.cs

@@ -2,6 +2,7 @@
     "name": "VisualPinball.Unity.VisualScripting.Runtime",
     "rootNamespace": "",
     "references": [
+        "Unity.VisualScripting.State",
         "Unity.VisualScripting.Core",
         "Unity.VisualScripting.Flow",
         "VisualPinball.Unity",
@@ -16,4 +17,4 @@
     "defineConstraints": [],
     "versionDefines": [],
     "noEngineReferences": false
-}
+}

Runtime/Packaging/VisualScriptingRefs.cs.meta

@@ -9,15 +9,16 @@
     "Script",
     "Visual"
   ],
-  "unity": "2021.2",
-  "unityRelease": "11f1",
+  "unity": "6000.0",
+  "unityRelease": "37f1",
   "dependencies": {
     "com.unity.visualscripting": "1.7.7",
     "org.visualpinball.engine.unity": "0.0.1-preview.90"
   },
   "author": "freezy <freezy@vpdb.io>",
   "contributors": [
-    "jsm174 <jsm174@gmail.com>"
+    "jsm174 <jsm174@gmail.com>",
+    "Arthur Kehrwald"
   ],
   "documentationUrl": "https://docs.visualpinball.org/",
   "changelogUrl": "https://docs.visualpinball.org/CHANGELOG.html",