build(deps-dev): bump webpack-dev-server from 3.11.0 to 3.11.1 in /html (#569)

build(deps-dev): bump webpack-dev-server from 3.11.0 to 3.11.1 in /html (#569)

Bumps [webpack-dev-server](https://github.com/webpack/webpack-dev-server) from 3.11.0 to 3.11.1.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Changelog](https://github.com/webpack/webpack-dev-server/blob/v3.11.1/CHANGELOG.md)
- [Commits](https://github.com/webpack/webpack-dev-server/compare/v3.11.0...v3.11.1)

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