fix(package): update mime to version 1.4.0 (#4120)

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
     "intersect": "1.0.1",
     "lodash": "4.17.4",
     "lru-cache": "4.1.1",
-    "mime": "1.3.6",
+    "mime": "1.4.0",
     "mongodb": "2.2.31",
     "multer": "1.3.0",
     "parse": "1.10.0",