Bump bitcoin version to v0.29.1

Author: andrewtoth

Cargo.toml

@@ -11,16 +11,16 @@ keywords = [ "crypto", "bitcoin" ]
 readme = "README.md"
 
 [features]
-use-serde = ["serde", "bitcoin/use-serde"]
+use-serde = ["serde", "bitcoin/serde"]
 
 [dependencies]
-bitcoin = "0.26"
+bitcoin = "0.29.1"
 rand = "0.7"
 rust-crypto = "0.2"
 
 serde = { version = "1", optional = true, features = ["derive"] }
 
 [dev-dependencies]
-bitcoin = { version = "0.26", features = ["use-serde", "bitcoinconsensus"] }
+bitcoin = { version = "0.29.1", features = ["serde", "bitcoinconsensus"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"