Update dependency chai to v6

Author: renovate[bot]

package.json

@@ -39,7 +39,7 @@
     "@arkweid/lefthook": "0.7.7",
     "@rollup/plugin-commonjs": "29.0.0",
     "@rollup/plugin-node-resolve": "16.0.3",
-    "chai": "4.3.4",
+    "chai": "6.2.2",
     "concurrently": "9.2.1",
     "karma": "6.4.4",
     "karma-firefox-launcher": "2.1.3",