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/css.rs

@@ -1,4 +1,4 @@
-use anyhow::{anyhow, Result};
+use anyhow::{Result, anyhow};
 use async_trait::async_trait;
 use futures::StreamExt;
 use gpui::AsyncApp;
@@ -14,7 +14,7 @@ use std::{
     path::{Path, PathBuf},
     sync::Arc,
 };
-use util::{maybe, ResultExt};
+use util::{ResultExt, maybe};
 
 const SERVER_PATH: &str =
     "node_modules/vscode-langservers-extracted/bin/vscode-css-language-server";