Update dependency openai-agents to v0.6.9

Signed-off-by: konflux-internal-p02 <170854209+konflux-internal-p02[bot]@users.noreply.github.com>

Author: konflux-internal-p02[bot]

demos/continuous_batching/agentic_ai/requirements.txt

@@ -1,4 +1,4 @@
-openai-agents==0.2.11
+openai-agents==0.6.9
 openai==1.107.0
 python-dateutil
 mcp_weather_server