Bump wasi-sdk to 25#616

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kateinoigakukun wants to merge 4 commits intomainfrom

katei/wasi-sdk-25

Commits on Dec 24, 2025

build: Remove TOOLCHAINS constant and move Binaryen to its own class
kateinoigakukun
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Commits on Dec 27, 2025

Commits on Dec 28, 2025

Fix `rake ci:pin_build_manifest`
kateinoigakukun
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