fix convergence method to debug for non-log sinkhorn

Author: LarsKue

bayesflow/utils/optimal_transport/sinkhorn.py

@@ -104,7 +104,7 @@ def do_nothing():
     def log_steps():
         msg = "Sinkhorn-Knopp converged after {} steps."
 
-        logging.info(msg, max_steps)
+        logging.debug(msg, max_steps)
 
     def warn_convergence():
         msg = "Sinkhorn-Knopp did not converge after {}."