Update RN to 0.68.3 for iOS build

ios/Podfile

@@ -1,24 +1,37 @@
 require_relative '../node_modules/react-native/scripts/react_native_pods'
 require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'
 
-platform :ios, '12.0'
+platform :ios, '11.0'
+install! 'cocoapods', :deterministic_uuids => false
 
 target 'drip' do
   config = use_native_modules!
 
+  # Flags change depending on the env values.
+  flags = get_default_flags()
+
   use_react_native!(
     :path => config[:reactNativePath],
     # to enable hermes on iOS, change `false` to `true` and then install pods
-    :hermes_enabled => false
+    :hermes_enabled => flags[:hermes_enabled],
+    :fabric_enabled => flags[:fabric_enabled],
+    # An absolute path to your application root.
+    :app_path => "#{Pod::Config.instance.installation_root}/.."
   )
 
   target 'dripTests' do
     inherit! :complete
     # Pods for testing
   end
-  
+
+  # Enables Flipper.
+  #
+  # Note that if you have use_frameworks! enabled, Flipper will not work and
+  # you should disable the next line.
+  use_flipper!()
+
   post_install do |installer|
     react_native_post_install(installer)
-    sed -i.bo 's/    node->getLayout()\.hadOverflow() |$/\0|/' ./node_modules/react-native/ReactCommon/yoga/yoga/Yoga.cpp
-  end  
+    __apply_Xcode_12_5_M1_post_install_workaround(installer)
+  end
 end