chore: Bump Rust edition to 2024 (#27800)

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

Release Notes:

- N/A

crates/story/src/story.rs

@@ -1,6 +1,6 @@
 use gpui::{
-    div, prelude::*, px, rems, AnyElement, App, DefaultColor, DefaultColors, Div, SharedString,
-    Window,
+    AnyElement, App, DefaultColor, DefaultColors, Div, SharedString, Window, div, prelude::*, px,
+    rems,
 };
 use itertools::Itertools;
 use smallvec::SmallVec;