build: Upgrade to React Native 0.73

ios-xcframework/Podfile

@@ -20,7 +20,7 @@ def setup_rnreanimated_pod_from_fork
   puts "[Gutenberg] Set REACT_NATIVE_NODE_MODULES_DIR env var for RNReanimated to #{rn_node_modules}"
 
   # Use a custom RNReanimated version while we coordinate a fix upstream
-  pod 'RNReanimated', git: 'https://github.com/wordpress-mobile/react-native-reanimated', branch: 'wp-fork-2.17.0'
+  pod 'RNReanimated', git: 'https://github.com/wordpress-mobile/react-native-reanimated', branch: 'wp-fork-3.6.2'
 end
 
 def gutenberg_dependencies
@@ -78,12 +78,6 @@ end
 post_install do |installer|
   react_native_post_install(installer, REACT_NATIVE_PATH)
 
-  # The following workaround is needed to avoid the error `typedef redefinition with different types ('uint8_t' (aka 'unsigned char') vs 'enum clockid_t')`.
-  # This solution is referenced in https://github.com/facebook/react-native/issues/39568#issuecomment-1762890606.
-  # It will be needed until RCT-Folly version is bumped in React Native to version v2022.08.29.00 or above.
-  # Referece: https://github.com/facebook/folly/commit/4a2410fae65afb85e1fec6d922005054b05de59f
-  __apply_Xcode_12_5_M1_post_install_workaround(installer)
-
   installer.pods_project.targets.each do |target|
     # Work around issue with embedding the Hermes XCFramework
     #