chore: Bump Rust edition to 2024 (#27800)

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

Release Notes:

- N/A

crates/editor/src/test.rs

@@ -4,12 +4,12 @@ pub mod editor_test_context;
 use std::sync::LazyLock;
 
 use crate::{
-    display_map::{DisplayMap, DisplaySnapshot, ToDisplayPoint},
     DisplayPoint, Editor, EditorMode, FoldPlaceholder, MultiBuffer,
+    display_map::{DisplayMap, DisplaySnapshot, ToDisplayPoint},
 };
 use gpui::{
-    font, AppContext as _, Context, Entity, Font, FontFeatures, FontStyle, FontWeight, Pixels,
-    Window,
+    AppContext as _, Context, Entity, Font, FontFeatures, FontStyle, FontWeight, Pixels, Window,
+    font,
 };
 use project::Project;
 use util::test::{marked_text_offsets, marked_text_ranges};