Release/5.8.0 (#1678)

# New
      
- Support for Twint SDK integration through the [`TwintComponent`
module](https://adyen.github.io/adyen-ios/5.8.0/documentation/adyen/TwintComponent).

 # Changed
      
- Flag icons are removed from the UI.
- The text  **Country**  is now replaced with **Country/Region**.

 # Fixed
      
- Fixed an issue that incorrectly cancelled successful redirect payments
in some cases.

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: goergisn <4838877+goergisn@users.noreply.github.com>

Adyen.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name = 'Adyen'
-  s.version = '5.7.1'
+  s.version = '5.8.0'
   s.summary = "Adyen Components for iOS"
   s.description = <<-DESC
     Adyen Components for iOS allows you to accept in-app payments by providing you with the building blocks you need to create a checkout experience.