Add zod as required dep

Author: JoelBCarter

package.json

@@ -32,7 +32,8 @@
     "@xyo-network/payload-builder": "5.3.2",
     "@xyo-network/wallet": "5.3.2",
     "@xyo-network/xl1-sdk": "1.21.10",
-    "dotenv": "17.2.3"
+    "dotenv": "17.2.3",
+    "zod": "4.3.6"
   },
   "devDependencies": {
     "@types/node": "25.2.0",