chore(package): update loopback-datasource-juggler to version 4.19.2

Closes #296

Author: greenkeeper[bot]

package.json

@@ -60,7 +60,7 @@
     "husky": "^0.14.3",
     "istanbul": "^0.4.5",
     "loopback": "^3.16.2",
-    "loopback-datasource-juggler": "^3.13.0",
+    "loopback-datasource-juggler": "^4.19.2",
     "mocha": "^4.0.1",
     "rsvp": "4.7.0",
     "semantic-release": "^12.2.2",