chore(deps): update dependency vuepress to v1.5.2 (#632)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -82,7 +82,7 @@
     "url-loader": "4.1.0",
     "vue-jest": "3.0.5",
     "vue-loader": "15.9.2",
-    "vuepress": "1.5.0",
+    "vuepress": "1.5.2",
     "webpack": "4.43.0",
     "webpack-cli": "3.3.12",
     "webpack-dev-server": "3.11.0",