Update dependency start-server-and-test to v1.11.4

Author: renovate-bot

package-lock.json

@@ -34,7 +34,7 @@
     "sass": "1.26.11",
     "sass-loader": "7.3.1",
     "script-ext-html-webpack-plugin": "2.1.4",
-    "start-server-and-test": "1.11.3",
+    "start-server-and-test": "1.11.4",
     "vue": "2.6.12",
     "vue-loader": "15.9.3",
     "vue-template-compiler": "2.6.12",