build(deps-dev): update dependency chai to v6

Author: renovate[bot]

package.json

@@ -28,7 +28,7 @@
     "sax": "1.4.1"
   },
   "devDependencies": {
-    "chai": "4.5.0",
+    "chai": "6.2.2",
     "chai-subset": "1.6.0",
     "codecov": "3.8.3",
     "conventional-changelog-conventionalcommits": "9.3.1",