chore(deps): bump vitepress from 1.6.0 to 1.6.3 (#3163)

Bumps [vitepress](https://github.com/vuejs/vitepress) from 1.6.0 to 1.6.3.
- [Release notes](https://github.com/vuejs/vitepress/releases)
- [Changelog](https://github.com/vuejs/vitepress/blob/main/CHANGELOG.md)
- [Commits](vuejs/vitepress@v1.6.0...v1.6.3)

---
updated-dependencies:
- dependency-name: vitepress
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]