build(deps): bump @fastify/rate-limit from 10.3.0 to 11.0.0 in /backend

Bumps [@fastify/rate-limit](https://github.com/fastify/fastify-rate-limit) from 10.3.0 to 11.0.0.
- [Release notes](https://github.com/fastify/fastify-rate-limit/releases)
- [Commits](fastify/fastify-rate-limit@v10.3.0...v11.0.0)

---
updated-dependencies:
- dependency-name: "@fastify/rate-limit"
  dependency-version: 11.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

backend/package-lock.json

@@ -28,7 +28,7 @@
     "@fastify/formbody": "^8.0.2",
     "@fastify/helmet": "^13.0.2",
     "@fastify/multipart": "^10.0.0",
-    "@fastify/rate-limit": "^10.3.0",
+    "@fastify/rate-limit": "^11.0.0",
     "@fastify/sensible": "^6.0.4",
     "@fastify/static": "^9.1.3",
     "@fastify/swagger": "^9.7.0",