fix

Author: Mr-Leshiy

rust/cardano-blockchain-types/Cargo.toml

@@ -35,7 +35,6 @@ num-traits = "0.2.19"
 ed25519-dalek = "2.1.1"
 serde = "1.0.210"
 num-bigint = "0.4.6"
-serde_json = "1.0.134"
 displaydoc = "0.2.5"
 thiserror = "2.0.11"