deps: Bump burst and collections.

Author: freezy

Packages/NativeTrees/package.json

@@ -12,7 +12,7 @@
   "category": "Unity",
   "type": "library",
   "dependencies": {
-    "com.unity.burst": "1.6.6",
-    "com.unity.collections": "1.4.0"
+    "com.unity.burst": "1.8.9",
+    "com.unity.collections": "2.1.4"
   }
 }