chore: upgrade openapi-generator-cli from v6.0.1 to v6.6.0 #1383

Job	Run time
Collect changes / collect-changes	11s
Python tests / unit-tests (py311)	2m 11s
Python tests / unit-tests (py313)	2m 10s
Python tests / unit-tests (py310)	2m 8s
Python tests / lint-and-format-check	20s
Python tests / types-check	27s
Python tests / unit-tests (py314)	2m 14s
Python tests / unit-tests (py312)	2m 11s
status-check	3s
	11m 55s

Provide feedback