Bump html-loader from 3.1.0 to 3.1.2 (#643)

Bump html-loader from 3.1.0 to 3.1.2 (#643)

Bumps [html-loader](https://github.com/webpack-contrib/html-loader) from 3.1.0 to 3.1.2.
- [Release notes](https://github.com/webpack-contrib/html-loader/releases)
- [Changelog](https://github.com/webpack-contrib/html-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/html-loader/compare/v3.1.0...v3.1.2)

---
updated-dependencies:
- dependency-name: html-loader
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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