chore(deps): update dependency chai to v6

Author: renovate[bot]

package.json

@@ -37,7 +37,7 @@
     "cne": "^1.0.1"
   },
   "devDependencies": {
-    "chai": "4.3.4",
+    "chai": "6.2.2",
     "coffee-script": "1.12.7",
     "eslint": "4.19.1",
     "eslint-config-standard": "11.0.0",