Port to Pydantic-AI #382

Job	Run time
Test ubuntu-latest Python 3.9	3m 22s
Test ubuntu-latest Python 3.10	1m 8s
Test ubuntu-latest Python 3.11	1m 18s
Test ubuntu-latest Python 3.12	1m 10s
Test macos-latest-xlarge Python 3.11	1m 25s
Test macos-latest-xlarge Python 3.12	1m 29s
Test macos-13 Python 3.9	5m 58s
Test macos-13 Python 3.10	2m 10s
Test macos-13 Python 3.11	2m 5s
Test macos-13 Python 3.12	1m 51s
Test windows-latest Python 3.9	7m 15s
Test windows-latest Python 3.10	4m 17s
Test windows-latest Python 3.11	4m 5s
Test windows-latest Python 3.12	2m 54s
	40m 27s

Provide feedback