chore: Bump Rust edition to 2024 (#27800)

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

Release Notes:

- N/A

crates/gpui/src/app/async_context.rs

@@ -3,7 +3,7 @@ use crate::{
     Entity, Focusable, ForegroundExecutor, Global, PromptLevel, Render, Reservation, Result, Task,
     VisualContext, Window, WindowHandle,
 };
-use anyhow::{anyhow, Context as _};
+use anyhow::{Context as _, anyhow};
 use derive_more::{Deref, DerefMut};
 use futures::channel::oneshot;
 use std::{future::Future, rc::Weak};