Bump webpack-command from 0.1.1 to 0.2.0

Bumps [webpack-command](https://github.com/webpack-contrib/webpack-command) from 0.1.1 to 0.2.0.
- [Release notes](https://github.com/webpack-contrib/webpack-command/releases)
- [Commits](webpack-contrib/webpack-command@v0.1.1...v0.2.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support