build(deps-dev): bump chai from 4.3.6 to 5.1.2

Bumps [chai](https://github.com/chaijs/chai) from 4.3.6 to 5.1.2.
- [Release notes](https://github.com/chaijs/chai/releases)
- [Changelog](https://github.com/chaijs/chai/blob/main/History.md)
- [Commits](chaijs/chai@v4.3.6...v5.1.2)

---
updated-dependencies:
- dependency-name: chai
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -19,7 +19,7 @@
     "@existdb/gulp-exist": "^5.0.0",
     "@existdb/gulp-replace-tmpl": "^1.0.4",
     "axios": "^1.7.9",
-    "chai": "^4.0.0",
+    "chai": "^5.1.2",
     "delete": "^1.1.0",
     "gulp": "^5.0.0",
     "gulp-rename": "^2.0.0",