Propper naming of requirements files #2674

Job	Run time
Data Processing (latest) (3.6, ubuntu-20.04)	1m 16s
Data Processing (latest) (3.7, ubuntu-20.04)	2m 55s
Data Processing (latest) (3.8, ubuntu-20.04)	2m 44s
Data Processing (pinned) (3.6, ubuntu-20.04)	3m 7s
Data Processing (latest) (3.9, ubuntu-20.04)	3m 3s
Data Processing (pinned) (3.7, ubuntu-20.04)	3m 55s
Data Processing (latest) (3.11, ubuntu-20.04)	4m 59s
Data Processing (pinned) (3.8, ubuntu-20.04)	2m 37s
Data Processing (latest) (3.12, ubuntu-20.04)	5m 19s
Data Processing (pinned) (3.9, ubuntu-20.04)	3m 22s
Data Processing (pinned) (3.10, ubuntu-20.04)	2m 7s
Data Processing (pinned) (3.11, ubuntu-20.04)	4m 32s
Data Processing (pinned) (3.12, ubuntu-20.04)	4m 40s
All Data Processing tests passed	1s
	44m 37s

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