Consolidate RUN for gcc install with other RUN #125

Job	Run time
build (linux/amd64, ubuntu-24.04, bookworm, gcc, 13)	1m 45s
build (linux/amd64, ubuntu-24.04, bookworm, clang, 20)	1m 53s
build (linux/amd64, ubuntu-24.04, bookworm, gcc, 14)	1m 53s
build (linux/amd64, ubuntu-24.04, bookworm, clang, 17)	1m 57s
build (linux/arm64, ubuntu-24.04-arm, bookworm, clang, 18)	1m 55s
build (linux/amd64, ubuntu-24.04, bookworm, clang, 19)	1m 50s
build (linux/amd64, ubuntu-24.04, bookworm, clang, 18)	2m 10s
build (linux/amd64, ubuntu-24.04, bookworm, gcc, 12)	1m 45s
build (linux/arm64, ubuntu-24.04-arm, bookworm, clang, 16)	1m 57s
build (linux/arm64, ubuntu-24.04-arm, bookworm, clang, 17)	2m 11s
build (linux/amd64, ubuntu-24.04, bookworm, clang, 16)	2m 12s
build (linux/arm64, ubuntu-24.04-arm, bookworm, clang, 19)	2m 14s
build (linux/arm64, ubuntu-24.04-arm, bookworm, gcc, 13)	2m 7s
build (linux/arm64, ubuntu-24.04-arm, bookworm, gcc, 14)	2m 2s
build (linux/arm64, ubuntu-24.04-arm, bookworm, clang, 20)	2m 1s
build (linux/arm64, ubuntu-24.04-arm, bookworm, gcc, 12)	2m 8s
merge	0s
	32m 0s

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