chore: Bump Rust edition to 2024 (#27800)

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

Release Notes:

- N/A

crates/snippet/src/snippet.rs

@@ -1,4 +1,4 @@
-use anyhow::{anyhow, Context as _, Result};
+use anyhow::{Context as _, Result, anyhow};
 use smallvec::SmallVec;
 use std::{collections::BTreeMap, ops::Range};