Bump vuepress from 2.0.0-beta.49 to 2.0.0-rc.0

Bumps [vuepress](https://github.com/vuejs/vuepress/tree/HEAD/packages/vuepress) from 2.0.0-beta.49 to 2.0.0-rc.0.
- [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-version: 2.0.0-rc.0
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -15,7 +15,7 @@
     "@vuepress/plugin-active-header-links": "^2.0.0-beta.49",
     "@vuepress/plugin-back-to-top": "^2.0.0-beta.49",
     "cypress": "^13.6.4",
-    "vuepress": "^2.0.0-beta.49",
+    "vuepress": "^2.0.0-rc.0",
     "vuepress-plugin-social-share": "^2.0.0-beta.5",
     "vuepress-plugin-use-pages": "^1.0.5"
   },