Keep rand-std feature for initializing of secp256k1 engine

Author: wvanlint

Cargo.toml

@@ -20,7 +20,7 @@ reqwest = { version = "0.11.13", default-features = false, features = ["rustls-t
 tokio = { version = "1", default-features = false, features = ["time"] }
 rand = "0.8.5"
 async-trait = "0.1.77"
-bitcoin = { version = "0.32.2", default-features = false, features = ["std"], optional = true }
+bitcoin = { version = "0.32.2", default-features = false, features = ["std", "rand-std"], optional = true }
 url = { version = "2.5.0", default-features = false, optional = true }
 base64 = { version = "0.21.7", default-features = false, optional = true }
 serde = { version = "1.0.196", default-features = false, features = ["serde_derive"], optional = true }