update steel version

basics/hello-solana/steel/Cargo.toml

@@ -16,6 +16,6 @@ keywords = ["solana"]
 bytemuck = "1.14"
 num_enum = "0.7"
 solana-program = "2.0.13"
-steel = "1.3"
+steel = "2.1"
 thiserror = "1.0"
 solana-sdk = "1.18"

basics/hello-solana/steel/program/Cargo.toml

@@ -8,4 +8,4 @@ crate-type = ["cdylib", "lib"]
 
 [dependencies]
 solana-program = "2.0.13"
-steel = "1.3.0"
+steel = "2.1"