Tests

Use uv for Package Constraints #617

Job	Run time
base_setup_minimum	24s
base_setup (ubuntu-latest, 3.8)	26s
base_setup (ubuntu-latest, 3.11)	20s
base_setup (windows-latest, 3.8)	1m 36s
base_setup_pre	24s
base_setup (windows-latest, 3.11)	1m 32s
binder_link	25s
base_setup (macos-latest, 3.8)	35s
base_setup (macos-latest, 3.11)	39s
base_setup (ubuntu-latest, 3.12)	25s
check_links	1m 14s
downstream_defaults	38s
downstream_overrides	1m 53s
pr_script	24s
Test Lint	41s
update_snapshots	42s
update_snapshots-manual-server	42s
Test coverage (ubuntu-latest)	20s
Test coverage (windows-latest)	1m 19s
Make SDist	1m 21s
Combine & check coverage	6s
Install from SDist and Test	44s
tests_check	2s
	16m 52s

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