Test `copyfile`

Test `copyfile` #319

Job	Run time
Test `copyfile` (ubuntu-latest, R2020b)	1m 3s
Test `copyfile` (ubuntu-latest, R2021a)	1m 9s
Test `copyfile` (ubuntu-latest, R2022a)	1m 5s
Test `copyfile` (ubuntu-latest, R2023a)	40s
Test `copyfile` (ubuntu-latest, R2023b)	1m 31s
Test `copyfile` (ubuntu-latest, latest)	1m 19s
Test `copyfile` (ubuntu-20.04, R2020b)	43s
Test `copyfile` (ubuntu-20.04, R2021a)	1m 19s
Test `copyfile` (ubuntu-20.04, R2022a)	1m 44s
Test `copyfile` (ubuntu-20.04, R2023a)	1m 21s
Test `copyfile` (ubuntu-20.04, R2023b)	1m 26s
Test `copyfile` (ubuntu-20.04, latest)	1m 25s
Test `copyfile` (macos-11, R2020b)	1s
Test `copyfile` (macos-11, R2021a)	1s
Test `copyfile` (macos-11, R2022a)	1s
Test `copyfile` (macos-11, R2023a)	1s
Test `copyfile` (macos-latest, R2020b)	29s
Test `copyfile` (macos-latest, R2021a)	27s
Test `copyfile` (macos-latest, R2022a)	28s
Test `copyfile` (macos-latest, R2023a)	1m 5s
Test `copyfile` (macos-13, R2020b)	2m 50s
Test `copyfile` (macos-13, R2021a)	2m 17s
Test `copyfile` (macos-13, R2022a)	3m 17s
Test `copyfile` (macos-13, R2023a)	2m 52s
	28m 34s

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