Update dependency @vue/cli-service to v5

package.json

@@ -25,7 +25,7 @@
     "@vue/cli-plugin-babel": "^4.5.13",
     "@vue/cli-plugin-eslint": "^4.5.13",
     "@vue/cli-plugin-unit-jest": "^4.5.13",
-    "@vue/cli-service": "^4.5.13",
+    "@vue/cli-service": "^5.0.0",
     "@vue/test-utils": "^1.0.0-beta.20",
     "babel-core": "7.0.0-bridge.0",
     "babel-eslint": "^10.1.0",