chore(deps): update dependency chai to v4.3.4

Author: renovate-bot

package-lock.json

@@ -64,13 +64,13 @@
   "devDependencies": {
     "@commitlint/cli": "8.2.0",
     "@commitlint/config-angular": "8.2.0",
-    "@types/chai": "4.2.13",
+    "@types/chai": "4.2.17",
     "@types/mocha": "5.2.7",
     "@types/node": "11.15.50",
     "@types/node-sass": "4.11.0",
     "@types/sprintf-js": "1.1.2",
     "cat": "0.2.0",
-    "chai": "4.2.0",
+    "chai": "4.3.4",
     "chai-spies": "0.7.1",
     "cross-env": "6.0.3",
     "husky": "3.0.9",