chore: 升级所有依赖包到最新版本

- @mdx-js/mdx: 3.1.0 → 3.1.1
- @mdx-js/react: 3.1.0 → 3.1.1
- @types/node: 18.11.17 → 24.7.2

已验证项目构建成功,无安全漏洞

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: zuohuadong