Bump ASFHyP3/actions from 0.12.0 to 0.15.0 #709

Job	Run time
call-version-info-workflow / version_info	44s
call-pytest-workflow / pytest (3.10)	2m 1s
call-pytest-workflow / pytest (3.11)	10m 5s
call-docker-ghcr-workflow / dockerize	4m 34s
	17m 24s

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