chore: Bump Rust edition to 2024 (#27800)

Follow-up to https://github.com/zed-industries/zed/pull/27791

Release Notes:

- N/A

crates/languages/src/lib.rs

@@ -8,7 +8,7 @@ use rust_embed::RustEmbed;
 use settings::SettingsStore;
 use smol::stream::StreamExt;
 use std::{str, sync::Arc};
-use util::{asset_str, ResultExt};
+use util::{ResultExt, asset_str};
 
 pub use language::*;