Rollup merge of #70151 - Amanieu:stdarch, r=sfackler
Rollup merge of #70151 - Amanieu:stdarch, r=sfackler

Update stdarch submodule

This only includes one commit:
- https://github.com/rust-lang/stdarch/commit/abe96ca3b87fcca6aa1dfcefd40d8c8d92d2e673 (https://github.com/rust-lang/stdarch/pull/842)

Fixes #68905

graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust