chore: upgrade openapi-generator-cli from v6.0.1 to v6.6.0 #1379

Job	Run time
Collect changes / collect-changes	11s
Python tests / types-check	24s
Python tests / lint-and-format-check	29s
Python tests / unit-tests (py311)	1m 4s
Python tests / unit-tests (py312)	1m 5s
Python tests / unit-tests (py313)	1m 4s
Python tests / unit-tests (py314)	43s
Python tests / unit-tests (py310)	1m 4s
status-check	2s
Collect changes / collect-changes	11s
Python tests / unit-tests (py314)	2m 37s
Python tests / unit-tests (py311)	3m 22s
Python tests / unit-tests (py312)	2m 50s
Python tests / unit-tests (py313)	4m 48s
Python tests / unit-tests (py310)	3m 25s
Python tests / lint-and-format-check	29s
Python tests / types-check	24s
status-check	3s
	24m 15s

Provide feedback