chore(deps): bump http-proxy-middleware in /frontend/server

Bumps [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware) from 0.18.0 to 2.0.7.
- [Release notes](https://github.com/chimurai/http-proxy-middleware/releases)
- [Changelog](https://github.com/chimurai/http-proxy-middleware/blob/v2.0.7/CHANGELOG.md)
- [Commits](chimurai/http-proxy-middleware@v0.18.0...v2.0.7)

---
updated-dependencies:
- dependency-name: http-proxy-middleware
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>