add fontsize arguments

Author: LuSchumacher

bayesflow/diagnostics.py

@@ -1209,7 +1209,6 @@ def plot_confusion_matrix(
 
     im = ax.imshow(cm, interpolation="nearest", cmap=cmap, vmin=0.0, vmax=1.0)
     cbar = ax.figure.colorbar(im, ax=ax, shrink=0.75)
-
     cbar.ax.tick_params(labelsize=value_fontsize)
 
     ax.set(xticks=np.arange(cm.shape[1]), yticks=np.arange(cm.shape[0]))