build

ci: reduce jobs to 3 on macos runners #643

Job	Run time
spellcheck	5s
linux-glibc-debian-bookworm-gcc	2m 9s
linux-glibc-debian-sid-llvm-riscv64	2m 7s
linux-glibc-debian-sid-gcc-riscv64	2m 6s
linux-glibc-debian-bookworm-llvm	2m 8s
linux-glibc-debian-testing-gcc	2m 6s
linux-glibc-debian-testing-llvm	2m 6s
linux-musl-alpine-gcc	2m 7s
linux-musl-alpine-llvm	2m 8s
linux-musl-debian-bookworm-gcc	2m 7s
linux-musl-debian-bookworm-llvm	2m 5s
linux-musl-debian-sid-gcc-riscv64	2m 6s
linux-musl-debian-sid-llvm-riscv64	2m 5s
linux-musl-debian-testing-gcc	2m 6s
linux-musl-debian-testing-llvm	2m 4s
linux-musl-from-mac	2m 5s
reuse-check	9s
shellcheck	8s
mac-llvm	2m 7s
mac-clang	2m 5s
win-gcc	2m 6s
win-llvm-from-mac	2m 6s
win-llvm	2m 6s
	42m 27s

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