Bump webpack from 4.42.0 to 4.42.1 (#7858)
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)
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