Add `tmp_zarr` fixture (#1784) #350

Job	Run time
mypy	3m 48s
py3.12 \| macos \| integration tests	16m 16s
py3.12 \| macos \| unit tests	13m 48s
py3.12 \| ubuntu \| integration tests	18m 16s
py3.12 \| ubuntu \| unit tests	13m 43s
py3.12 \| windows \| integration tests	32m 23s
py3.12 \| windows \| unit tests	21m 29s
py3.10 \| ubuntu \| integration tests	18m 14s
py3.10 \| ubuntu \| unit tests	12m 34s
py3.11 \| ubuntu \| unit tests	12m 20s
merge-test-artifacts	5s
	2h 42m 56s

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