chore: upgrade react native (#2018)

packages/mobile/ios/Podfile

@@ -3,7 +3,8 @@
 require_relative '../node_modules/react-native/scripts/react_native_pods'
 require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'
 
-platform :ios, '11.0'
+platform :ios, '12.4'
+install! 'cocoapods', :deterministic_uuids => false
 
 # Standard Notes Specific
 pod 'TrustKit', '1.6.5'
@@ -11,35 +12,62 @@ pod 'TrustKit', '1.6.5'
 target 'StandardNotes' 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 is now enabled by default. Disable by setting this flag to false.
+    # Upcoming versions of React Native may rely on get_default_flags(), but
+    # we make it explicit here to aid in the React Native upgrade process.
+    :hermes_enabled => true,
+    :fabric_enabled => flags[:fabric_enabled],
+    # Enables Flipper.
+    #
+    # Note that if you have use_frameworks! enabled, Flipper will not work and
+    # you should disable the next line.
+    :flipper_configuration => FlipperConfiguration.enabled,
+    # An absolute path to your application root.
+    :app_path => "#{Pod::Config.instance.installation_root}/.."
   )
 
   target 'StandardNotesTests' 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!
 end
 
 target 'StandardNotesDev' do
   config = use_native_modules!
-  use_react_native!(
-    path: config['reactNativePath'],
 
-    # Enabling hermes breaks fastlane build (at time of commit)
-    hermes_enabled: false
+  # Flags change depending on the env values.
+  flags = get_default_flags()
+
+  use_react_native!(
+    path: config[:reactNativePath],
+
+    # Hermes is now enabled by default. Disable by setting this flag to false.
+    # Upcoming versions of React Native may rely on get_default_flags(), but
+    # we make it explicit here to aid in the React Native upgrade process.
+    :hermes_enabled => true,
+    :fabric_enabled => flags[:fabric_enabled],
+    # Enables Flipper.
+    #
+    # Note that if you have use_frameworks! enabled, Flipper will not work and
+    # you should disable the next line.
+    :flipper_configuration => FlipperConfiguration.enabled,
+    # An absolute path to your application root.
+    :app_path => "#{Pod::Config.instance.installation_root}/.."
   )
 end
 
 post_install do |installer|
-  react_native_post_install(installer)
+  react_native_post_install(
+    installer,
+    # Set `mac_catalyst_enabled` to `true` in order to apply patches
+    # necessary for Mac Catalyst builds
+    :mac_catalyst_enabled => false
+  )
   __apply_Xcode_12_5_M1_post_install_workaround(installer)
 end