Add Ruby 4.0 build #679

Job	Run time
ci-data	5s
Compile native gem for arm64-darwin	1m 53s
Compile native gem for x86_64-darwin	1m 50s
Compile native gem for x86_64-linux	4m 58s
Compile native gem for aarch64-linux	1m 39s
Compile native gem for x64-mingw-ucrt	1m 55s
Compile native gem for aarch64-linux-musl	1m 37s
Compile native gem for x86_64-linux-musl	1m 44s
	15m 41s

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