update react native example to ios 12.4

The ios example for react native didn't run on xcode 13.4.
Therefore we use this hack
facebook/react-native#34106 (comment)

This can probably be removed once the react native version is upgraded.

libs/sdk-react-native/example/ios/Podfile

@@ -39,6 +39,14 @@ target 'BreezSDKExample' do
       # necessary for Mac Catalyst builds
       :mac_catalyst_enabled => false
     )
+    # NOTE: Change IPHONEOS_DEPLOYMENT_TARGET to 12.4.
+    # This is a hack to support xcode 13.4. Upgrading the react native version
+    # should also work.
+    installer.pods_project.targets.each do |target|
+      target.build_configurations.each do |config|
+        config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '12.4'
+      end
+    end
     __apply_Xcode_12_5_M1_post_install_workaround(installer)
   end
 end

libs/sdk-react-native/example/ios/Podfile.lock

@@ -606,6 +606,6 @@ SPEC CHECKSUMS:
   Yoga: 99caf8d5ab45e9d637ee6e0174ec16fbbb01bcfc
   YogaKit: f782866e155069a2cca2517aafea43200b01fd5a
 
-PODFILE CHECKSUM: 9f3871d04be8540089d10530c43e62ccaf18de62
+PODFILE CHECKSUM: dde307fb9262c53380a1c0fb4aef45a8e92b5cdb
 
 COCOAPODS: 1.11.3