fix(deps): bump http-proxy-middleware from 1.0.3 to 1.0.4

Bumps [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware) from 1.0.3 to 1.0.4.
- [Release notes](https://github.com/chimurai/http-proxy-middleware/releases)
- [Changelog](https://github.com/chimurai/http-proxy-middleware/blob/master/CHANGELOG.md)
- [Commits](chimurai/http-proxy-middleware@v1.0.3...v1.0.4)

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