Bump OpenAstronomy/github-actions-workflows from 1.14.0 to 1.15.0 in the actions group #1244

Job	Run time
tests / Load tox environments	5s
tests / py310-test-oldestdeps (macos-latest)	4m 34s
tests / py311-test (macos-latest)	4m 45s
tests / py312-test (macos-latest)	5m 13s
tests / py310-test-oldestdeps (ubuntu-latest)	8m 35s
tests / py311-test (ubuntu-latest)	8m 45s
tests / py312-test (ubuntu-latest)	9m 48s
tests / py312-test-devdeps (ubuntu-latest)	9m 22s
tests / py310-test-oldestdeps (windows-latest)	8m 32s
tests / py311-test (windows-latest)	9m 22s
tests / py312-test (windows-latest)	9m 32s
publish / Load build targets	3s
publish / Build source distribution	6m 12s
publish / Build cp*-manylinux_x86_64 wheels	24m 12s
publish / Build cp*-manylinux_aarch64 wheels	14m 32s
publish / Build cp*-macosx_x86_64 wheels	20m 31s
publish / Build cp*-macosx_arm64 wheels	11m 39s
publish / Build cp*-win_amd64 wheels	22m 52s
publish / Upload	0s
	2h 58m 34s

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