Update dependency chai to v4.3.0

Author: renovate-bot

package.json

@@ -42,7 +42,7 @@
  "babel-loader": "8.2.2",
  "babel-plugin-istanbul": "6.0.0",
  "babel-plugin-transform-remove-console": "6.9.4",
- "chai": "4.2.0",
+ "chai": "4.3.0",
  "chai-arrays": "2.2.0",
  "chai-bytes": "0.1.2",
  "circular-json": "0.5.9",