chore(deps): update dependency chai to v6

Author: renovate[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "@types/node": "24.10.0",
     "@typescript-eslint/eslint-plugin": "8.46.3",
     "@typescript-eslint/parser": "8.46.3",
-    "chai": "4.5.0",
+    "chai": "6.2.0",
     "chai-as-promised": "8.0.2",
     "eslint": "9.39.1",
     "eslint-config-prettier": "10.1.8",