tests: Move arq under toxgen #8622

Job	Run time
GraphQL (pinned) (3.13, ubuntu-22.04)	4m 6s
GraphQL (pinned) (3.9, ubuntu-22.04)	2m 49s
GraphQL (pinned) (3.8, ubuntu-22.04)	2m 45s
GraphQL (pinned) (3.11, ubuntu-22.04)	2m 13s
GraphQL (pinned) (3.6, ubuntu-22.04)	1m 55s
GraphQL (pinned) (3.7, ubuntu-22.04)	1m 38s
GraphQL (pinned) (3.12, ubuntu-22.04)	3m 30s
GraphQL (pinned) (3.10, ubuntu-22.04)	2m 44s
All pinned GraphQL tests passed	2s
	21m 42s

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