contract/money/Cargo.toml: added missing darkfi validator feature

src/contract/money/Cargo.toml

@@ -17,7 +17,7 @@ thiserror = "1.0.56"
 
 # The following dependencies are used for the client API and
 # probably shouldn't be in WASM
-darkfi = { path = "../../../", features = ["zk", "rpc", "blockchain"], optional = true }
+darkfi = { path = "../../../", features = ["zk", "rpc", "blockchain", "validator"], optional = true }
 chacha20poly1305 = { version = "0.10.1", optional = true }
 halo2_proofs = { version = "0.3.0", optional = true }
 log = { version = "0.4.20", optional = true }