Upgrade getrandom

Author: jedisct1

Cargo.toml

@@ -15,10 +15,10 @@ repository = "https://github.com/jedisct1/rust-minisign"
 homepage = "https://github.com/jedisct1/rust-minisign"
 
 [target.'cfg(all(any(target_arch = "wasm32", target_arch = "wasm64"), target_os = "unknown"))'.dependencies]
-getrandom = { version = "0.3", optional = false, default-features = false, features = ["wasm_js"] }
+getrandom = { version = "0.4", optional = false, default-features = false, features = ["wasm_js"] }
 
 [target.'cfg(not(all(any(target_arch = "wasm32", target_arch = "wasm64"), target_os = "unknown")))'.dependencies]
-getrandom = { version = "0.3", optional = false, default-features = false }
+getrandom = { version = "0.4", optional = false, default-features = false }
 
 [dependencies]
 scrypt = { version = "0.11.0", default-features = false }