tests

Split conda test out into separate workflow #1576

Job	Run time
linting	26s
ubuntu-latest py3.12	15m 4s
windows-latest py3.9	22m 33s
macos-14 py3.9	15m 19s
ubuntu-latest py3.9	16m 47s
windows-latest py3.12	25m 3s
macos-14 py3.12	15m 20s
macos-13 py3.12	24m 39s
macos-13 py3.9	21m 38s
Build source distribution	-1s
Publish build distributions	0s
	2h 36m 48s

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