use jest expect

Author: kobenguyent

package.json

@@ -22,7 +22,6 @@
   },
   "homepage": "https://github.com/codeceptjs/mailslurp-helper#readme",
   "dependencies": {
-    "chai": "^6.2.0",
     "expect": "^30.2.0",
     "mailslurp-client": "^16.0.0",
     "ts-node": "^10.9.2"