bump package.json to 2022.3

Packages/com.trytalo.talo/package.json

@@ -3,7 +3,7 @@
   "version": "0.16.4",
   "displayName": "Talo Game Services",
   "description": "Talo (https://trytalo.com) is an open-source game backend with services designed to help you build games faster. You can currently:\n\n- Identify players\n- Store persistent data across players\n- Track events (levelling up, finding loot, etc)\n- Display high scores with leaderboards\n- Store and load player saves\n- Load game config options and flags from the cloud",
-  "unity": "2021.3",
+  "unity": "2022.3",
   "keywords": [],
   "author": {
     "name": "Talo",