refactor: move test fixtures #7041

Job	Run time
Linter	2m 27s
Unit tests (ubuntu-latest)	1m 9s
Unit tests (macos-latest)	1m 8s
Format check	46s
E2E tests (macos-latest)	9m 18s
Unit tests (windows-latest)	2m 10s
Integration tests (ubuntu-latest)	1m 34s
Integration tests (windows-latest)	3m 52s
E2E tests (windows-latest)	17m 2s
Build	1m 28s
E2E tests (ubuntu-latest)	8m 23s
Integration tests (macos-latest)	2m 15s
	51m 32s

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