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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