chore: 升级 dumi 至 2.3.8

[lvisei]

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🤔 这个变动的性质是？

• 新特性提交
• 日常 bug 修复
• 站点、文档改进
• 演示代码改进
• 组件样式/交互改进
• TypeScript 定义更新
• 包体积优化
• 性能优化
• 功能增强
• 国际化改进
• 重构
• 代码风格优化
• 测试用例
• 分支合并
• 工作流程
• 版本更新
• 其他改动（是关于什么的改动？）

🔗 相关 Issue

• fixed dumi 升级 2.3 后官网部分页面访问失败 #2469

[changeset-bot]

⚠️ No Changeset found

Latest commit: 8dae8f0

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