Merge pull request #42 from apiaryio/dependabot/npm_and_yarn/chai-4.2.0

Update chai requirement from 4.1.2 to 4.2.0

Author: honzajavorek

package.json

@@ -20,7 +20,7 @@
     "http-string-parser": "0.0.6"
   },
   "devDependencies": {
-    "chai": "4.1.2",
+    "chai": "4.2.0",
     "eslint": "4.19.0",
     "eslint-config-airbnb-base": "12.1.0",
     "eslint-plugin-import": "2.17.3",