Update rust bitcoin to merkle proofs PR

Author: sanket1729

Cargo.toml

@@ -17,7 +17,7 @@ rand = ["bitcoin/rand"]
 
 [dependencies]
 # bitcoin = "0.27"
-bitcoin = {git = "https://github.com/rust-bitcoin/rust-bitcoin", rev = "f9b3fc9ce8f7ab8a287bcf6ffb254b3480a109e6"}
+bitcoin = {git = "https://github.com/sanket1729/rust-bitcoin", branch = "taproot_psbt"}
 
 [dependencies.serde]
 version = "1.0"