chore: Bump Rust edition to 2024 (#27800)

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

Release Notes:

- N/A

crates/assistant_tools/src/read_file_tool.rs

@@ -2,7 +2,7 @@ use std::path::Path;
 use std::sync::Arc;
 
 use crate::schema::json_schema_for;
-use anyhow::{anyhow, Result};
+use anyhow::{Result, anyhow};
 use assistant_tool::{ActionLog, Tool};
 use gpui::{App, Entity, Task};
 use itertools::Itertools;