Merge pull request #1587 from SwiftFiddle/renovate/chai-6.x

Update dependency chai to v6

Author: kishikawakatsumi

dev/xml-formatter/package-lock.json

@@ -54,7 +54,7 @@
     "@typescript-eslint/parser": "^8.0.0",
     "babelify": "^10.0.0",
     "browserify": "^17.0.0",
-    "chai": "^5.0.0",
+    "chai": "^6.0.0",
     "eslint": "^9.0.0",
     "glob": "^11.0.0",
     "mocha": "^11.0.0",