chore(deps): update dependency del-cli to v7 #264

Job	Run time
typecheck / typecheck (latest)	21s
test / test_linux (latest)	19s
test / test_linux (lts/iron)	21s
lint / lint (lts/iron)	20s
lint / lint (latest)	18s
typecheck / typecheck (lts/iron)	19s
test / test_windows (latest)	57s
test / test_windows (lts/iron)	1m 24s
	4m 19s

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