Bump http-proxy-middleware in /frontend

Bumps  and [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware). These dependencies needed to be updated together.

Updates `http-proxy-middleware` from 2.0.6 to 3.0.5
- [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@v2.0.6...v3.0.5)

Updates `http-proxy-middleware` from 1.0.6 to 3.0.5
- [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@v2.0.6...v3.0.5)

---
updated-dependencies:
- dependency-name: http-proxy-middleware
  dependency-version: 3.0.5
  dependency-type: direct:production
- dependency-name: http-proxy-middleware
  dependency-version: 3.0.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -19,7 +19,7 @@
     "comsync": "^0.0.8",
     "defaults": "^1.0.3",
     "firebase": "^8.6.3",
-    "http-proxy-middleware": "^1.0.6",
+    "http-proxy-middleware": "^3.0.5",
     "localforage": "^1.9.0",
     "lodash": "^4.17.21",
     "p-retry": "^5.0.0",