fix(package): update @feathersjs/feathers to version 4.4.3

Closes #85

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "@feathersjs/configuration": "^2.0.4",
     "@feathersjs/errors": "^3.3.0",
     "@feathersjs/express": "^1.2.2",
-    "@feathersjs/feathers": "^3.1.5",
+    "@feathersjs/feathers": "^4.4.3",
     "amqplib": "^0.5.2",
     "compression": "^1.7.2",
     "cors": "^2.8.4",