build

CI: export SDKROOT for macos runner #697

Job	Run time
ci (Release, DP, linux gnu-10)	35m 41s
ci (Release, DP, linux gnu-14)	35m 16s
ci (Release, DP, linux nvhpc-23.5)	39m 54s
ci (Release, DP, linux intel-classic)	18m 27s
ci (Release, DP, macos)	39m 4s
ci (Release, SP, linux gnu-10)	34m 25s
ci (Release, SP, linux gnu-14)	34m 7s
ci (Release, SP, linux nvhpc-23.5)	41m 42s
ci (Release, SP, linux intel-classic)	17m 37s
ci (Release, SP, macos)	38m 14s
	5h 34m 27s

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