build

Add LUMI-G to build-hpc CI workflow #1059

Job	Run time
ci (Release, linux gnu-10)	8m 15s
ci (Release, linux clang-12)	4m 54s
ci (Release, linux nvhpc-21.9)	16m 59s
ci (Release, linux intel-classic)	7m 53s
ci (Release, macos)	8m 37s
ci (Debug, linux gnu-10)	17m 17s
ci (Debug, linux clang-12)	7m 50s
ci (Debug, linux nvhpc-21.9)	33m 47s
ci (Debug, linux intel-classic)	16m 51s
ci (Debug, macos)	9m 0s
	2h 11m 23s

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