Update hard-source-webpack-plugin requirement from 0.12.0 to 0.13.1 (#3611)

Updates the requirements on [hard-source-webpack-plugin](https://github.com/mzgoddard/hard-source-webpack-plugin) to permit the latest version.
- [Release notes](https://github.com/mzgoddard/hard-source-webpack-plugin/releases)
- [Changelog](https://github.com/mzgoddard/hard-source-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mzgoddard/hard-source-webpack-plugin/commits/v0.13.1

)

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