Bump html-webpack-plugin from 3.2.0 to 4.5.2 (#161)

Bumps [html-webpack-plugin](https://github.com/jantimon/html-webpack-plugin) from 3.2.0 to 4.5.2.
- [Release notes](https://github.com/jantimon/html-webpack-plugin/releases)
- [Changelog](https://github.com/jantimon/html-webpack-plugin/blob/v4.5.2/CHANGELOG.md)
- [Commits](jantimon/html-webpack-plugin@v3.2.0...v4.5.2)

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