Change logger.warn to logger.warning

tardis/visualization/tools/liv_plot.py

@@ -310,7 +310,7 @@ def _prepare_plot_data(
             if num_bins < 1:
                 raise ValueError("Number of bins must be positive")
             elif num_bins > len(bin_edges) - 1:
-                logger.warn(
+                logger.warning(
                     "Number of bins must be less than or equal to number of shells. Plotting with number of bins equals to number of shells."
                 )
                 new_bin_edges = bin_edges