fix: Update next in docs to fix CVEs (solana-foundation#4122)

Author: Arrowana

docs/package.json

@@ -16,7 +16,7 @@
     "fumadocs-mdx": "11.1.1",
     "fumadocs-ui": "14.5.4",
     "lucide-react": "^0.454.0",
-    "next": "15.1.4",
+    "next": "15.1.10",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "zod": "^3.23.8"