add tolerance to no zeros tests #212

Job	Run time
Pixi test_dependencies_optimistic (3.11, ubuntu-latest)	1m 37s
Pixi test_dependencies_locked (3.11, ubuntu-latest)	1m 27s
Pixi test_dependencies_optimistic (3.8, macos-latest)	1m 32s
Pixi test_dependencies_locked (3.8, macos-latest)	1m 19s
	5m 55s

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