chore(deps-dev): bump chai in /test/fixtures/webpack-merge

Bumps [chai](https://github.com/chaijs/chai) from 4.5.0 to 5.1.1.
- [Release notes](https://github.com/chaijs/chai/releases)
- [Changelog](https://github.com/chaijs/chai/blob/main/History.md)
- [Commits](chaijs/chai@v4.5.0...v5.1.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

test/fixtures/webpack-merge/package.json

@@ -13,6 +13,6 @@
   },
   "license": "Apache-2.0",
   "devDependencies": {
-    "chai": "^4.3.7"
+    "chai": "^5.1.1"
   }
 }