Update vue monorepo to v1.0.0-beta.31

Author: renovate-bot

package.json

@@ -62,8 +62,8 @@
         "@commitlint/config-conventional": "^8.0.0",
         "@octokit/rest": "^16.0.0",
         "@vue/cli-plugin-eslint": "^4.0.0",
-        "@vue/server-test-utils": "1.0.0-beta.16",
-        "@vue/test-utils": "1.0.0-beta.16",
+        "@vue/server-test-utils": "1.0.0-beta.31",
+        "@vue/test-utils": "1.0.0-beta.31",
         "acorn": "^7.0.0",
         "autoprefixer": "^9.6.0",
         "axios": "^0.19.0",