Bump WASI SDK to version 22 #669

Job	Run time
ci-data	4s
Compile native gem for aarch64-mingw-ucrt	1m 23s
Compile native gem for aarch64-linux	1m 54s
Compile native gem for x64-mingw-ucrt	2m 10s
Compile native gem for x86_64-linux-musl	2m 5s
Compile native gem for arm64-darwin	2m 1s
Compile native gem for aarch64-linux-musl	1m 57s
Compile native gem for x86_64-darwin	1m 58s
Compile native gem for x86_64-linux	5m 25s
	18m 57s

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