vercel: use official plaiceholder plugin

package.json

@@ -13,6 +13,7 @@
     "@headlessui/react": "^2.2.0",
     "@kodingdotninja/use-tailwind-breakpoint": "^0.0.5",
     "@next/eslint-plugin-next": "^15.1.1",
+    "@plaiceholder/next": "^3.0.0",
     "@tailwindcss/typography": "^0.5.8",
     "@tanstack/react-query": "^4.16.0",
     "@tippyjs/react": "^4.2.6",
@@ -22,7 +23,7 @@
     "@trpc/server": "^10.0.0",
     "@vercel/analytics": "^0.1.6",
     "next": "^15.1.1",
-    "plaiceholder": "^2.5.0",
+    "plaiceholder": "^3.0.0",
     "prettier": "^3.4.2",
     "react": "18.2.0",
     "react-dom": "18.2.0",