Fixed a Swift 5.10 and Swift 6.0 compilation issue found on the "init(privateKey: publicKey: )" initializer function of the GenerateHashUseCase use case in the library target.

Sources/MarvelService/Internal/Use Cases/GenerateHashUseCase.swift

@@ -34,7 +34,7 @@ struct GenerateHashUseCase {
     ///   - publicKey: A public key.
     init(
         privateKey: String,
-        publicKey: String,
+        publicKey: String
     ) {
         self.privateKey = privateKey
         self.publicKey = publicKey