Update intel mac to macos12 #855

Job	Run time
build-bladebit-cuda-windows-x86-64	50m 18s
build-bladebit-cuda-linux-arm64	13m 12s
build-bladebit-centos-arm64	2m 44s
build-bladebit-centos-x86-64	14m 52s
build-bladebit-ubuntu-x86-64	16m 13s
build-bladebit-windows-x86-64	4m 21s
build-harvester-linux-arm64	7m 9s
build-harvester-linux-x86-64	7m 15s
build-harvester-macos-arm64	26s
build-harvester-macos-x86-64	45s
build-harvester-windows-x86-64	17m 20s
	2h 14m 35s

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