chore(package): update nodemon to version 1.18.6

Closes #5146

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "jsdoc-babel": "^0.5.0",
     "lint-staged": "^7.2.2",
     "mongodb-runner": "4.3.2",
-    "nodemon": "1.18.4",
+    "nodemon": "1.18.6",
     "nyc": "^12.0.2",
     "prettier": "1.14.3",
     "supports-color": "^5.4.0"