Update version to 3.1.0.dev2

frontend/taipy/package.json

@@ -30,7 +30,8 @@
     "fast-deep-equal": "^3.1.3",
     "formik": "^2.2.9",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react-dom": "^18.2.0",
+    "taipy-gui": "file:../../taipy/gui/webapp"
   },
   "scripts": {
     "postinstall": "node scripts/install.js",