BUG: fix compatibility with numpy 2.0.0 (copy semantics) #377

Job	Run time
ubuntu-py38-oldestdeps	1m 18s
macos-py310-astroscrappy11	1m 8s
ubuntu-py39	1m 31s
ubuntu-py39-bottleneck	1m 11s
ubuntu-py310	1m 21s
macos-py39	1m 11s
windows-py310	2m 28s
ubuntu-codestyle	10s
ubuntu-build_docs	1m 17s
ubuntu-py310-test-alldeps-devdeps	2m 48s
	14m 23s

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