Update vuejs

babel.config.js

@@ -1,5 +1,5 @@
 module.exports = {
   presets: [
-    '@vue/app'
+    '@vue/cli-plugin-babel/preset'
   ]
 }

package.json

@@ -13,16 +13,16 @@
     "axios": "^0.19.0",
     "bootstrap": "^4.3.1",
     "bootstrap-vue": "^2.0.0",
-    "core-js": "^2.6.5",
+    "core-js": "^3.3.2",
     "vue": "^2.6.10",
     "vue-gettext": "^2.1.5",
     "vue-matomo": "^3.9.1-2",
     "vue-router": "^3.1.3"
   },
   "devDependencies": {
-    "@vue/cli-plugin-babel": "^3.11.0",
-    "@vue/cli-plugin-eslint": "^3.11.0",
-    "@vue/cli-service": "^3.11.0",
+    "@vue/cli-plugin-babel": "^4.0.5",
+    "@vue/cli-plugin-eslint": "^4.0.5",
+    "@vue/cli-service": "^4.0.5",
     "@vue/eslint-config-standard": "^4.0.0",
     "babel-eslint": "^10.0.1",
     "eslint": "^5.16.0",