Fix tests

SecretKit/Common/Types/SignedData.swift

@@ -1,6 +1,13 @@
 import Foundation
 
 public struct SignedData {
+
     public let data: Data
     public let requiredAuthentication: Bool
+
+    public init(data: Data, requiredAuthentication: Bool) {
+        self.data = data
+        self.requiredAuthentication = requiredAuthentication
+    }
+
 }