fix(package): update npm-run-all to version 4.1.2

Closes #377

Author: greenkeeper[bot]

package.json

@@ -70,7 +70,7 @@
     "less": "2.7.2",
     "lodash": "4.17.4",
     "mkdirp": "0.5.1",
-    "npm-run-all": "4.0.2",
+    "npm-run-all": "4.1.2",
     "react": "15.6.1",
     "react-addons-css-transition-group": "15.6.0",
     "react-addons-test-utils": "15.6.0",