fix(package): update filesize to version 3.5.6 (#127)

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -56,7 +56,7 @@
     "copy-paste": "1.3.0",
     "dargs": "5.1.0",
     "detect-port": "1.1.0",
-    "filesize": "3.5.5",
+    "filesize": "3.5.6",
     "fs-promise": "2.0.0",
     "handlebars": "4.0.6",
     "ip": "1.1.5",