Clean up server_args.py to have a dedicated function for model specific adjustments (#8983)

.github/workflows/execute-notebook.yml

@@ -26,10 +26,7 @@ jobs:
         run: |
           bash scripts/ci_install_dependency.sh
           pip install -r docs/requirements.txt
-          apt-get update
-          apt-get install -y pandoc
-          apt-get update && apt-get install -y parallel retry
-
+          apt-get update && apt-get install -y pandoc parallel retry
           ln -sf "$(which python3)" /usr/bin/python
 
       - name: Setup Jupyter Kernel