chore(deps-dev): bump copy-webpack-plugin from 7.0.0 to 8.0.0

Bumps [copy-webpack-plugin](https://github.com/webpack-contrib/copy-webpack-plugin) from 7.0.0 to 8.0.0.
- [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@v7.0.0...v8.0.0)

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

Author: dependabot[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "autoprefixer": "^10.2.3",
     "babel-loader": "^8.2.2",
     "clean-webpack-plugin": "^3.0.0",
-    "copy-webpack-plugin": "^7.0.0",
+    "copy-webpack-plugin": "^8.0.0",
     "css-loader": "^5.0.1",
     "eslint": "^7.21.0",
     "eslint-config-standard": "^16.0.2",