add `DOWNLOAD` staging action #2435

Job	Run time
linting	44s
analytics (3.7)	3m 32s
tests (3.7)	1m 3s
analytics (3.8)	4m 11s
tests (3.8)	52s
analytics (3.9)	3m 40s
tests (3.9)	49s
analytics (3.10)	3m 42s
tests (3.10)	56s
analytics (3.11)	3m 39s
tests (3.11)	55s
analytics (3.12)	3m 32s
tests (3.12)	1m 1s
notebook_integration_test (3.10) / tests	2m 17s
notebook_integration_test (3.11) / tests	2m 49s
notebook_integration_test (3.12) / tests	2m 33s
notebook_integration_test (3.7) / tests	2m 0s
notebook_integration_test (3.9) / tests	2m 18s
notebook_integration_test (3.8) / tests	2m 16s
	42m 49s

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