Tests

Support extracting minimum constraints for monorepo #693

Job	Run time
base_setup_minimum	20s
base_setup (ubuntu-latest, 3.8)	16s
base_setup_pre	25s
base_setup (ubuntu-latest, 3.11)	27s
base_setup (windows-latest, 3.8)	58s
binder_link	23s
base_setup (windows-latest, 3.11)	59s
check_links	1m 5s
base_setup (macos-latest, 3.8)	50s
base_setup (macos-latest, 3.11)	20s
base_setup (ubuntu-latest, 3.12)	18s
Test coverage (ubuntu-latest)	31s
downstream_defaults	40s
Test coverage (windows-latest)	1m 0s
downstream_overrides	1m 3s
pr_script	20s
Make SDist	1m 0s
Test Lint	31s
update_snapshots	1m 2s
update_snapshots-manual-server	1m 3s
Combine & check coverage	1s
Install from SDist and Test	1s
tests_check	4s
	13m 37s

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