Bump http-proxy-middleware from 2.0.3 to 2.0.9 in /client (#930)

Bumps [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware) from 2.0.3 to 2.0.9.
- [Release notes](https://github.com/chimurai/http-proxy-middleware/releases)
- [Changelog](https://github.com/chimurai/http-proxy-middleware/blob/v2.0.9/CHANGELOG.md)
- [Commits](chimurai/http-proxy-middleware@v2.0.3...v2.0.9)

---
updated-dependencies:
- dependency-name: http-proxy-middleware
  dependency-version: 2.0.9
  dependency-type: indirect
...

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Author: dependabot[bot]

client/yarn.lock

@@ -6039,9 +6039,9 @@ http-proxy-agent@^4.0.1:
     debug "4"
 
 http-proxy-middleware@^2.0.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/http-proxy-middleware/-/http-proxy-middleware-2.0.3.tgz#5df04f69a89f530c2284cd71eeaa51ba52243289"
-  integrity sha512-1bloEwnrHMnCoO/Gcwbz7eSVvW50KPES01PecpagI+YLNLci4AcuKJrujW4Mc3sBLpFxMSlsLNHS5Nl/lvrTPA==
+  version "2.0.9"
+  resolved "https://registry.yarnpkg.com/http-proxy-middleware/-/http-proxy-middleware-2.0.9.tgz#e9e63d68afaa4eee3d147f39149ab84c0c2815ef"
+  integrity sha512-c1IyJYLYppU574+YI7R4QyX2ystMtVXZwIdzazUIPIJsHuWNd+mho2j+bKoHftndicGj9yh+xjd+l0yj7VeT1Q==
   dependencies:
     "@types/http-proxy" "^1.17.8"
     http-proxy "^1.18.1"