Third-Party Update: copy-webpack-plugin has been updated

In the package theme-utils the copy-webpack-plugin has been updated to version 6.0.3 from 5.1.1 to avoid security issues of previous versions.

If you use a custom copy-webpack-plugin in project code, please check the respective release notes for changes and upgrade information. See https://github.com/webpack-contrib/copy-webpack-plugin/releases

(CMS-17955)