🔧 Update Rust edition from 2021 to 2024

Update Rust edition from 2021 to 2024

This change updates the project's Rust edition in Cargo.toml to use
the latest 2024 edition, allowing the codebase to take advantage of
the newest Rust language features and improvements.

The update follows recent dependency upgrades and error handling
improvements, maintaining our commitment to using modern Rust
features across the codebase.

Author: hyperb1iss

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "git-iris"
 version = "0.9.1"
-edition = "2021"
+edition = "2024"
 authors = ["Stefanie Jane <[email protected]>"]
 description = "AI-assisted Git workflow"
 readme = "README.md"