chore: app dep upgrade

Author: bluebill1049

package.json

@@ -12,7 +12,7 @@
     "clsx": "^1.2.1",
     "contentlayer": "^0.3.4",
     "little-state-machine": "^4.8.1",
-    "next": "^15.4.6",
+    "next": "^15.5.2",
     "next-contentlayer": "^0.3.4",
     "next-themes": "^0.2.1",
     "prism-react-renderer": "^2.4.1",