chore(package): update nodemon to version 1.15.0 (#4569)

Author: greenkeeper[bot]

package.json

@@ -61,7 +61,7 @@
     "jasmine": "2.9.0",
     "jasmine-spec-reporter": "^4.1.0",
     "mongodb-runner": "3.6.1",
-    "nodemon": "1.14.12",
+    "nodemon": "1.15.0",
     "nyc": "^11.0.2",
     "request-promise": "4.2.2"
   },