Refactor: pull CU dependencies directly from dependency graph (#1820) #8140

Job	Run time
check-rust	3m 52s
check-website	11s
build test linux x86-64	4m 13s
doc tests	3m 18s
build test windows x86-64	7m 42s
scarb-metadata compatibility check	41s
test linux x86-64 1/8	21m 33s
test linux x86-64 2/8	24m 7s
test linux x86-64 3/8	20m 4s
test linux x86-64 4/8	17m 50s
test linux x86-64 5/8	15m 46s
test linux x86-64 6/8	13m 43s
test linux x86-64 7/8	13m 36s
test linux x86-64 8/8	15m 12s
test windows x86-64 1/8	19m 16s
test windows x86-64 2/8	22m 41s
test windows x86-64 3/8	19m 30s
test windows x86-64 4/8	16m 32s
test windows x86-64 5/8	15m 54s
test windows x86-64 6/8	12m 6s
test windows x86-64 7/8	13m 28s
test windows x86-64 8/8	14m 12s
	4h 55m 27s

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