SEOUL, May 1 : South Korean exports rose for an 11th month in April, beating forecasts, as the global appetite for artificial intelligence infrastructure boosted semiconductor sales to offset jitters from the Middle East conflict.  Exports from Asia's fourth-largest economy, a bellwether for global trade, jumped 48.0 per cent from a year earlier, higher than a median 45.3 per cent increase forecast in a Reuters poll.  Imports increased 16.7 per cent in April from a year ago, also beating a 14.5