chore: 升级 dumi 至 2.3.8

[lvisei]

[English Template / 英文模板]

🤔 这个变动的性质是？

• [ ] 新特性提交
• [ ] 日常 bug 修复
• [x] 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 #2469

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 8dae8f016a285455f53f8249659b2faa4193a5b7

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR