fix(package): update lru-cache to version 4.1.2 (#4614)

Author: greenkeeper[bot]

package.json

@@ -29,7 +29,7 @@
     "express": "4.16.2",
     "intersect": "1.0.1",
     "lodash": "4.17.5",
-    "lru-cache": "4.1.1",
+    "lru-cache": "4.1.2",
     "mime": "2.2.0",
     "mongodb": "3.0.4",
     "multer": "1.3.0",