chore(repo): update rust to latest (#117)

no reason not to be on latest

Author: Evalir

Cargo.toml

@@ -4,7 +4,7 @@ version = "0.2.0"
 description = "signet builder example"
 
 edition = "2024"
-rust-version = "1.85"
+rust-version = "1.87"
 authors = ["init4"]
 license = "Apache-2.0 OR MIT"
 homepage = "https://github.com/init4tech/builder"