chore: Bump Rust edition to 2024 (#27800)

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

Release Notes:

- N/A

crates/language/src/text_diff.rs

@@ -1,9 +1,8 @@
 use crate::{CharClassifier, CharKind, LanguageScope};
 use imara_diff::{
-    diff,
+    Algorithm, UnifiedDiffBuilder, diff,
     intern::{InternedInput, Token},
     sources::lines_with_terminator,
-    Algorithm, UnifiedDiffBuilder,
 };
 use std::{iter, ops::Range, sync::Arc};