fix: move AAC fixtures out of cassettes directory #1650

Job	Run time
Collect changes / collect-changes	9s
Python tests / lint-and-format-check	11s
Python tests / types-check	14s
Python tests / unit-tests (py312)	2m 54s
Python tests / unit-tests (py311)	3m 30s
Python tests / docs-scripts-tests	17s
Python tests / unit-tests (py313)	2m 59s
Python tests / unit-tests (py314)	2m 55s
Python tests / unit-tests (py310)	3m 36s
status-check	2s
	16m 47s

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