update loopback-chai

Author: Walker Leite

template/package.json

@@ -75,7 +75,7 @@
     "karma-chai": "^0.1.0",
     "karma-mocha": "^1.3.0",
     "karma-chrome-launcher": "^2.2.0",
-    "loopback-chai": "^2.2.0",
+    "loopback-chai": "^2.3.0",
     "mocha": "^3.4.2",
     "sinon": "^2.3.8",
     "tmp": "0.0.33",