Auto merge of #77819 - mati865:crossbeam-ub, r=Mark-Simulacrum
Auto merge of #77819 - mati865:crossbeam-ub, r=Mark-Simulacrum

Update crossbeam-channel to avoid UB

More info: https://github.com/RustSec/advisory-db/pull/425

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