chore(deps): bump http-proxy-middleware from 1.3.1 to 2.0.0

Bumps [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware) from 1.3.1 to 2.0.0.
- [Release notes](https://github.com/chimurai/http-proxy-middleware/releases)
- [Changelog](https://github.com/chimurai/http-proxy-middleware/blob/master/CHANGELOG.md)
- [Commits](https://github.com/chimurai/http-proxy-middleware/compare/v1.3.1...v2.0.0)

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

packages/fxa-content-server/package.json

@@ -90,7 +90,7 @@
     "handlebars": "^4.5.2",
     "helmet": "^4.5.0",
     "hot-shots": "^8.3.1",
-    "http-proxy-middleware": "^1.0.3",
+    "http-proxy-middleware": "^2.0.0",
     "i18n-abide": "0.0.26",
     "joi": "^14.3.1",
     "jquery": "3.6.0",