Bump webpack-merge from 5.7.3 to 5.8.0 (#16405)

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 5.7.3 to 5.8.0.
- [Release notes](https://github.com/survivejs/webpack-merge/releases)
- [Changelog](https://github.com/survivejs/webpack-merge/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/survivejs/webpack-merge/compare/v5.7.3...v5.8.0)

---
updated-dependencies:
- dependency-name: webpack-merge
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -166,7 +166,7 @@
     "webpack-assets-manifest": "^4.0.6",
     "webpack-bundle-analyzer": "^4.4.2",
     "webpack-cli": "^3.3.12",
-    "webpack-merge": "^5.7.3",
+    "webpack-merge": "^5.8.0",
     "wicg-inert": "^3.1.1",
     "ws": "^7.4.6"
   },