
* Bump Dart SDK to `1.20.0-dev.10.0`. `1.20.0-dev.10.0` corresponds to `1.20-RC0`. * pubspec.lock cleanup * check for pubspec.lock existence * cleaned up conditional remove
* Bump Dart SDK to `1.20.0-dev.10.0`. `1.20.0-dev.10.0` corresponds to `1.20-RC0`. * pubspec.lock cleanup * check for pubspec.lock existence * cleaned up conditional remove