chore(deps): update nextjs monorepo to v15

Author: renovate[bot]

examples/nextjs/package.json

@@ -15,7 +15,7 @@
     "@walletconnect/sign-client": "^2.17.1",
     "algosdk": "2.9.0",
     "lute-connect": "^1.4.1",
-    "next": "14.2.15",
+    "next": "15.0.3",
     "react": "18.3.1",
     "react-dom": "18.3.1"
   },
@@ -24,7 +24,7 @@
     "@types/react": "18.3.11",
     "@types/react-dom": "18.3.1",
     "eslint": "8.57.1",
-    "eslint-config-next": "14.2.15",
+    "eslint-config-next": "15.0.3",
     "typescript": "5.6.3"
   }
 }