fix(deps): update dependency mkdirp to v1

Author: renovate-bot

package-lock.json

@@ -46,7 +46,7 @@
     "isomorphic-fetch": "^2.2.1",
     "jsend": "^1.1.0",
     "lodash": "^4.17.15",
-    "mkdirp": "^0.5.1",
+    "mkdirp": "^1.0.0",
     "moment": "^2.22.2",
     "numeral": "^2.0.6",
     "query-string": "^6.8.2",