chore(package): update concurrently to version 3.5.1

Closes #337

Author: greenkeeper[bot]

package.json

@@ -47,7 +47,7 @@
     "awesome-typescript-loader": "3.1.2",
     "bore": "2.0.1",
     "commitizen": "2.9.6",
-    "concurrently": "3.4.0",
+    "concurrently": "3.5.1",
     "css-loader": "0.26.2",
     "cz-lerna-changelog": "1.2.1",
     "expect": "1.20.2",