Update and simplify Github Action for regression testing. #26

Job	Run time
build (macos-15-intel, prism-mac64-x86)	4m 9s
build (macos-latest, prism-mac64-arm)	2m 45s
build (ubuntu-22.04-arm, prism-linux64-arm)	2m 15s
build_src	10s
build (ubuntu-latest, prism-linux64-x86)	2m 29s
test_release (macos-latest, prism-mac64-arm)	27s
test_release (ubuntu-22.04-arm, prism-linux64-arm)	18s
test_release (ubuntu-latest, prism-linux64-x86)	16s
test_release (macos-15-intel, prism-mac64-x86)	34s
publish	0s
	13m 23s

Provide feedback