agrega estilo a los nombres en la tabla

ContactsApp/ContactsViewController.swift

@@ -85,8 +85,17 @@ extension ContactsViewController: UITableViewDelegate, UITableViewDataSource {
     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {        
         let cell = tableView.dequeueReusableCell(withIdentifier: "contactName")!
         let contactCell = contactStructArray[indexPath.section].contacts[indexPath.row]
-
-        cell.textLabel?.text = "\(contactCell.givenName) \(contactCell.familyName)"
+        
+        let givenName = "\(contactCell.givenName) "
+        let familyName: NSMutableAttributedString = NSMutableAttributedString(string: contactCell.familyName)
+        
+        let attributes: [NSAttributedString.Key: Any] = [
+            .font: UIFont.boldSystemFont(ofSize: 15)
+        ]
+        let fullName = NSMutableAttributedString(string: givenName, attributes: attributes)
+        fullName.append(familyName)
+        
+        cell.textLabel?.attributedText = fullName
         
         return cell
     }