Update clean-webpack-plugin requirement from 2.0.1 to 3.0.0

Updates the requirements on [clean-webpack-plugin](https://github.com/johnagan/clean-webpack-plugin) to permit the latest version.
- [Release notes](https://github.com/johnagan/clean-webpack-plugin/releases)
- [Commits](johnagan/clean-webpack-plugin@v2.0.1...v3.0.0)

Author: dependabot-preview[bot]

package.json

@@ -47,7 +47,7 @@
     "babel-eslint": "10.1.0",
     "babel-loader": "8.0.5",
     "babel-plugin-angularjs-annotate": "0.10.0",
-    "clean-webpack-plugin": "2.0.1",
+    "clean-webpack-plugin": "3.0.0",
     "copy-webpack-plugin": "5.0.2",
     "css-loader": "3.5.3",
     "enzyme": "3.9.0",