deprecate `copy_arrays` with warning #2744

Job	Run time
asdf / Load tox environments	5s
astropy / Load tox environments	4s
stsci / Load tox environments	6s
third-party / Load tox environments	7s
astropy / asdf-astropy (ubuntu-latest)	2m 34s
astropy / specutils (ubuntu-latest)	1m 46s
asdf / asdf-wcs-schemas (ubuntu-latest)	1m 50s
asdf / asdf-coordinates-schemas (ubuntu-latest)	3m 30s
asdf / asdf-zarr (ubuntu-latest)	52s
asdf / asdf-compression (ubuntu-latest)	35s
stsci / astrocut (ubuntu-latest)	58s
stsci / gwcs (ubuntu-latest)	1m 8s
stsci / jwst (ubuntu-latest)	20m 38s
stsci / stdatamodels (ubuntu-latest)	2m 37s
stsci / stpipe (ubuntu-latest)	49s
stsci / roman_datamodels (ubuntu-latest)	1m 28s
third-party / weldx (ubuntu-latest)	2m 23s
third-party / sunpy (ubuntu-latest)	3m 3s
third-party / dkist (ubuntu-latest)	2m 29s
	47m 2s

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