lang: Remove bytemuck_derive version requirement (#3630)

Author: acheroncrypto

Cargo.lock

@@ -58,8 +58,3 @@ borsh = "0.10.3"
 bytemuck = "1"
 solana-program = "2"
 thiserror = "1"
-
-# v1.9 specifies `rust-version = "1.84"`, which causes compatibility issues with Solana build
-# tools' Rust version (1.79.0 at the time of writing this comment).
-# TODO: Remove when the Solana version we use comes with Rust version >= 1.84
-bytemuck_derive = ">1.0.0, <1.9"