Upgrade to next15

package.json

@@ -5,7 +5,7 @@
   "author": "Enrico Ros <enrico.ros@gmail.com>",
   "repository": "https://github.com/enricoros/big-agi",
   "scripts": {
-    "dev": "next dev",
+    "dev": "next dev --turbopack",
     "dev-https": "next dev --experimental-https",
     "build": "next build",
     "start": "next start",
@@ -94,5 +94,9 @@
   },
   "engines": {
     "node": "^20.0.0 || ^18.0.0"
+  },
+  "overrides": {
+    "@types/react": "^18.3.12",
+    "@types/react-dom": "^18.3.1"
   }
 }