Bump copy-webpack-plugin from 11.0.0 to 12.0.0

Bumps [copy-webpack-plugin](https://github.com/webpack-contrib/copy-webpack-plugin) from 11.0.0 to 12.0.0.
- [Release notes](https://github.com/webpack-contrib/copy-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/copy-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/copy-webpack-plugin@v11.0.0...v12.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -39,7 +39,7 @@
         "@webcomponents/webcomponentsjs": "^2.8.0",
         "@xmldom/xmldom": "^0.8.10",
         "autoprefixer": "^10.4.16",
-        "copy-webpack-plugin": "^11.0.0",
+        "copy-webpack-plugin": "^12.0.0",
         "copyfiles": "^2.4.1",
         "cross-env": "^7.0.3",
         "css-loader": "^6.8.1",