Update usage and resolve conflicts

Author: gopidesupavan

providers/common/ai/src/airflow/providers/common/ai/hooks/pydantic_ai.py

@@ -280,7 +280,7 @@ def run_agent(self, agent: Agent[None, Any], request: AgentRunRequest) -> AgentR
         else:
             result = agent.run_sync(request.prompt, **run_kwargs)
 
-        usage = result.usage()
+        usage = result.usage
         tool_names: list[str] = []
         for message in result.all_messages():
             for part in getattr(message, "parts", []):