chore: Bump Rust edition to 2024 (#27800)

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

Release Notes:

- N/A

crates/zeta/src/completion_diff_element.rs

@@ -2,8 +2,8 @@ use std::cmp;
 
 use crate::InlineCompletion;
 use gpui::{
-    point, prelude::*, quad, size, AnyElement, App, BorderStyle, Bounds, Corners, Edges,
-    HighlightStyle, Hsla, StyledText, TextLayout, TextStyle,
+    AnyElement, App, BorderStyle, Bounds, Corners, Edges, HighlightStyle, Hsla, StyledText,
+    TextLayout, TextStyle, point, prelude::*, quad, size,
 };
 use language::OffsetRangeExt;
 use settings::Settings;