Port to Pydantic-AI #380

Job	Run time
Test ubuntu-latest Python 3.9	3m 22s
Test ubuntu-latest Python 3.10	1m 32s
Test ubuntu-latest Python 3.11	1m 11s
Test ubuntu-latest Python 3.12	1m 9s
Test macos-latest-xlarge Python 3.11	1m 29s
Test macos-latest-xlarge Python 3.12	1m 28s
Test macos-13 Python 3.9	4m 36s
Test macos-13 Python 3.10	2m 16s
Test macos-13 Python 3.11	2m 43s
Test macos-13 Python 3.12	3m 31s
Test windows-latest Python 3.9	8m 35s
Test windows-latest Python 3.10	5m 47s
Test windows-latest Python 3.11	3m 35s
Test windows-latest Python 3.12	4m 59s
	46m 13s

Provide feedback