Bump webpack-merge from 5.10.0 to 6.0.1 in /build-monitor-plugin

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 5.10.0 to 6.0.1.
- [Changelog](https://github.com/survivejs/webpack-merge/blob/develop/CHANGELOG.md)
- [Commits](survivejs/webpack-merge@v5.10.0...v6.0.1)

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

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

build-monitor-plugin/package.json

@@ -31,7 +31,7 @@
     "style-loader": "4.0.0",
     "webpack": "5.91.0",
     "webpack-cli": "5.1.4",
-    "webpack-merge": "5.10.0"
+    "webpack-merge": "6.0.1"
   },
   "engines": {
     "node": ">=0.10"