chore: update to Unity 6000.0.83f1

Author: vaind

scripts/unity-versions.json

@@ -8,8 +8,8 @@
     "changeset": "96770f904ca7"
   },
   "6000.0": {
-    "version": "6000.0.82f1",
-    "changeset": "2fb0dae735e1"
+    "version": "6000.0.83f1",
+    "changeset": "dacc44548933"
   },
   "6000.3": {
     "version": "6000.3.23f1",