Auto merge of #117372 - Amanieu:stdarch_update, r=Mark-Simulacrum

Update stdarch submodule

Splits up #27731 into multiple tracking issues.

Closes #27731

Author: bors

tests/pass/intrinsics-x86-aes-vaes.rs

@@ -9,7 +9,7 @@
 //@ignore-target-wasm32
 //@compile-flags: -C target-feature=+aes,+vaes,+avx512f
 
-#![feature(avx512_target_feature, stdsimd)]
+#![feature(avx512_target_feature, stdarch_x86_avx512)]
 
 use core::mem::transmute;
 #[cfg(target_arch = "x86")]

tests/pass/intrinsics-x86-avx512.rs

@@ -10,7 +10,7 @@
 //@compile-flags: -C target-feature=+avx512f,+avx512vl,+avx512bitalg,+avx512vpopcntdq
 
 #![feature(avx512_target_feature)]
-#![feature(stdsimd)]
+#![feature(stdarch_x86_avx512)]
 
 #[cfg(target_arch = "x86")]
 use std::arch::x86::*;