Bump http-proxy-middleware from 2.0.6 to 2.0.7 in /frontend

Bumps [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware) from 2.0.6 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@v2.0.6...v2.0.7)

---
updated-dependencies:
- dependency-name: http-proxy-middleware
  dependency-type: indirect
...

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

frontend/yarn.lock

@@ -3610,8 +3610,8 @@ http-parser-js@>=0.5.1:
   resolved "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.5.6.tgz"
 
 http-proxy-middleware@^2.0.3:
-  version "2.0.6"
-  resolved "https://registry.npmjs.org/http-proxy-middleware/-/http-proxy-middleware-2.0.6.tgz"
+  version "2.0.7"
+  resolved "https://registry.yarnpkg.com/http-proxy-middleware/-/http-proxy-middleware-2.0.7.tgz#915f236d92ae98ef48278a95dedf17e991936ec6"
   dependencies:
     "@types/http-proxy" "^1.17.8"
     http-proxy "^1.18.1"