fix: install litellm and pyyaml in production-check job

Author: firefox-669

.github/workflows/ci.yml

@@ -116,6 +116,7 @@ jobs:
       run: |
         pip install setuptools>=61.0 wheel
         pip install -e .
+        pip install litellm pyyaml
     
     - name: Run production readiness check
       run: |