build: 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>

package.json

@@ -59,7 +59,7 @@
     "babel-loader": "^8.2.2",
     "chai": "^4.3.3",
     "chai-as-promised": "^7.1.1",
-    "copy-webpack-plugin": "^7.0.0",
+    "copy-webpack-plugin": "^8.0.0",
     "core-js": "^3.9.1",
     "css-loader": "^5.1.1",
     "eslint": "^7.20.0",

packages/mandelbrot/package.json

@@ -31,7 +31,7 @@
     "autoprefixer": "^10.2.5",
     "babel-eslint": "^10.1.0",
     "babel-loader": "^8.2.2",
-    "copy-webpack-plugin": "^7.0.0",
+    "copy-webpack-plugin": "^8.0.0",
     "core-js": "^3.9.1",
     "css-loader": "^5.1.1",
     "expose-loader": "^2.0.0",