chore(deps-dev): bump vuepress from 2.0.0-rc.12 to 2.0.0-rc.13

Bumps [vuepress](https://github.com/vuejs/vuepress/tree/HEAD/packages/vuepress) from 2.0.0-rc.12 to 2.0.0-rc.13.
- [Release notes](https://github.com/vuejs/vuepress/releases)
- [Changelog](https://github.com/vuejs/vuepress/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vuepress/commits/HEAD/packages/vuepress)

---
updated-dependencies:
- dependency-name: vuepress
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -26,7 +26,7 @@
  "markdown-it-abbr": "^2.0.0",
  "markdown-it-footnote": "^4.0.0",
  "mermaid": "^10.9.1",
- "vuepress": "2.0.0-rc.12"
+ "vuepress": "2.0.0-rc.13"
  },
  "dependencies": {
  "katex": "^0.16.9",