ci: build platform ruby_wasm gems for Ruby 4.0 #753

Job	Run time
ci-data	4s
Push source gem	0s
Compile native gem for x64-mingw-ucrt	21s
Compile native gem for aarch64-linux	20s
Compile native gem for aarch64-linux-musl	21s
Compile native gem for x86_64-darwin	15s
Compile native gem for x86_64-linux	19s
Compile native gem for x86_64-linux-musl	16s
Compile native gem for arm64-darwin	20s
	2m 16s

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