chore(deps): update dependency winston to v2.4.7

Author: renovate[bot]

package-lock.json

@@ -29,7 +29,7 @@
     "asterisk-ami": "0.2.0-beta1",
     "jsplugs": "0.1.0",
     "moment": "2.22.0",
-    "winston": "2.3.1"
+    "winston": "2.4.7"
   },
   "publishConfig": {
     "access": "public"