fix(deps): update nextjs monorepo to v15

Author: renovate[bot]

package.json

@@ -14,7 +14,7 @@
     "@react-three/fiber": "^8.16.0",
     "framer-motion": "^11.0.22",
     "maath": "^0.10.7",
-    "next": "^14.1.4",
+    "next": "^15.0.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-tilt": "^1.0.2",
@@ -28,7 +28,7 @@
     "@types/three": "^0.169.0",
     "autoprefixer": "^10.4.19",
     "eslint": "^9.0.0",
-    "eslint-config-next": "^14.1.4",
+    "eslint-config-next": "^15.0.0",
     "postcss": "^8.4.38",
     "tailwindcss": "^3.4.3"
   }