lodash version bumped

Author: iyerrama29

package.json

@@ -37,8 +37,8 @@
   "dependencies": {
     "basic-auth": "^2.0.1",
     "body-parser": "^1.18.3",
-    "lodash": "^4.17.11",
-    "debug": "^4.1.0"
+    "debug": "^4.1.0",
+    "lodash": "^4.17.15"
   },
   "devDependencies": {
     "@types/basic-auth": "^1.1.2",