Bump webpack from 4.42.0 to 4.42.1

Bumps [webpack](https://github.com/webpack/webpack) from 4.42.0 to 4.42.1.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.42.0...v4.42.1

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: npmbuildbot[bot] <npmbuildbot[bot]@users.noreply.github.com>