Bump qdrant-client from 1.6.4 to 1.11.2 in /llm-server

Bumps [qdrant-client](https://github.com/qdrant/qdrant-client) from 1.6.4 to 1.11.2.
- [Release notes](https://github.com/qdrant/qdrant-client/releases)
- [Commits](qdrant/qdrant-client@v1.6.4...v1.11.2)

---
updated-dependencies:
- dependency-name: qdrant-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

llm-server/requirements.txt

@@ -121,7 +121,7 @@ python-engineio==4.8.2
 python-json-logger==2.0.7
 python-socketio==5.11.1
 PyYAML==6.0.1
-qdrant-client==1.6.4
+qdrant-client==1.11.2
 redis==5.0.1
 referencing==0.30.2
 regex==2023.10.3