chore(package): update chai to version 4.1.1

Closes #8

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
   "devDependencies": {
     "@bubltechnology/customizable-commit-analyzer": "1.0.2-0",
     "bluebird": "3.5.0",
-    "chai": "4.0.2",
+    "chai": "4.1.1",
     "condition-circle": "1.5.0",
     "coveralls": "2.13.1",
     "loopback": "3.8.0",