Auto merge of #139914 - GuillaumeGomez:update-stdarch, r=Amanieu

Update stdarch submodule

https://github.com/rust-lang/stdarch/pull/1768 is needed to unblock the `cg_gcc` current sync so this PR updates the `stdarch` submodule.

cc `@antoyo`
r? `@Amanieu`
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2025-04-16 15:30:36 +00:00