chore(package): update @types/chai to version 4.2.2

Closes #190

Author: greenkeeper[bot]

package.json

@@ -25,7 +25,7 @@
   "homepage": "https://github.com/inversify/inversify-binding-decorators#readme",
   "dependencies": {},
   "devDependencies": {
-    "@types/chai": "4.2.0",
+    "@types/chai": "4.2.2",
     "@types/mocha": "5.2.7",
     "@types/sinon": "7.0.13",
     "chai": "4.2.0",