Update clean-webpack-plugin requirement from ^2.0.2 to ^3.0.0

[dependabot-preview]

Updates the requirements on clean-webpack-plugin to permit the latest version.

Release notes

Sourced from clean-webpack-plugin's releases.

v3.0.0

• Removed Node 6 support
• Removed webpack 2 support
• cleanOnceBeforeBuildPatterns use emit hook instead of compile
• Do not clean files if webpack errors are present during initial build
• Replaced default export with named export CleanWebpackPlugin

// es modules
import { CleanWebpackPlugin } from 'clean-webpack-plugin';

// common js
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

Commits

• 6fd2f73 Merge pull request #144 from chrisblossom/3.0.0
• 67eb0bd Merge pull request #145 from chrisblossom/use-np
• 6bc3b44 use np to handle package releases
• aa86638 3.0.0
• f2e58bf Merge pull request #138 from chrisblossom/use-named-export
• d0e3408 breaking: replace default export with named export CleanWebpackPlugin
• b74ac15 Merge pull request #134 from chrisblossom/use-emit
• f90f963 Merge pull request #142 from chrisblossom/remove-node-6-and-webpack-2
• 030dbaa Merge pull request #140 from zmj97/patch-1
• 57d2cd4 use isPlainObject function
• Additional commits viewable in compare view

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