Pin macos ci to 12 #103

Job	Run time
ci-ubuntu-22.04-clang (16, 20, ON, ON)	3m 23s
ci-ubuntu-20.04-g++-10-networking-ON-tls-ON	3m 21s
ci-ubuntu-22.04-clang (16, 23, ON, ON)	3m 37s
ci-ubuntu-20.04-g++-10-networking-ON-tls-ON	3m 27s
ci-ubuntu-22.04-clang (17, 20, ON, ON)	3m 23s
ci-ubuntu-20.04-g++-10-networking-ON-tls-OFF	2m 54s
ci-ubuntu-22.04-g++ (11, 20, ON, ON)	3m 20s
ci-ubuntu-22.04-clang (17, 23, ON, ON)	3m 30s
ci-ubuntu-22.04-g++ (11, 23, ON, ON)	3m 30s
ci-ubuntu-20.04-g++-10-networking-ON-tls-OFF	2m 50s
ci-ubuntu-22.04-g++ (12, 20, ON, ON)	3m 33s
ci-ubuntu-20.04-g++-10-networking-OFF-tls-OFF	2m 47s
ci-ubuntu-22.04-g++ (12, 23, ON, ON)	3m 16s
ci-ubuntu-20.04-g++-10-networking-OFF-tls-OFF	2m 21s
ci-ubuntu-22.04-g++ (13, 20, ON, ON)	3m 28s
ci-ubuntu-22.04-g++ (13, 23, ON, ON)	3m 57s
	52m 37s

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