build(deps-dev): bump vuepress from 1.3.0 to 1.3.1

Bumps [vuepress](https://github.com/vuejs/vuepress/tree/HEAD/packages/vuepress) from 1.3.0 to 1.3.1.
- [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/v1.3.1/packages/vuepress)

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

package.json

@@ -95,7 +95,7 @@
     "tsd": "^0.11.0",
     "typescript": "^3.7.5",
     "vue": "^2.6.10",
-    "vuepress": "^1.3.0",
+    "vuepress": "^1.3.1",
     "zlib": "^1.0.5"
   },
   "peerDependencies": {