Test

🔥 Remove old package stub slim, not user nor needed (#419) #1248

Job	Run time
test (ubuntu-latest, 3.14, highest)	20s
test (windows-latest, 3.14, highest)	35s
test (3.12, macos-latest, lowest-direct)	30s
test (3.11, windows-latest, highest)	41s
test (3.13, ubuntu-latest, highest)	19s
test (macos-latest, 3.14, highest)	19s
test (3.13, windows-latest, highest)	37s
test (3.10, ubuntu-latest, lowest-direct)	13s
coverage-combine	11s
check	3s
	3m 48s

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