why manual version sync is bad

manual_fastlane_version_sync_for_flutter.rb

upload_to_play_store(
  track: 'alpha',
  # This is bad because it's trivial to match the version number in the pubspec.yml
  # and it's easily forgotten. Once mismatched, the user will exprience an outdated
  # app and the developer team will struggle to get the versioning back to the right
  # track.
  version_code: 8,
  aab: '../build/app/outputs/bundle/release/app-release.aab',
  skip_upload_screenshots: true,
  skip_upload_images: true
)