chore(deps): update dependency chai to v4.3.1

Author: renovate-bot

package-lock.json

@@ -39,7 +39,7 @@
     "@semantic-release/git": "7.0.18",
     "@semantic-release/github": "5.5.8",
     "@semantic-release/npm": "5.3.5",
-    "chai": "4.3.0",
+    "chai": "4.3.1",
     "eslint": "5.16.0",
     "eslint-config-standard": "12.0.0",
     "eslint-plugin-import": "2.22.1",