Auto merge of #133349 - ehuss:stabilize-2024, r=traviscross,compiler-errors

Stabilize the 2024 edition

This stabilizes the 2024 edition for Rust 1.85, scheduled to be released on February 20, 2025. 🎉

cc tracking issue: rust-lang/rust#117258

There is a fair amount of follow-up work after this that I am working on (various docs, cargo, rustfmt, etc.), and this is will unblock those other changes.

Author: bors