`pareto_fronts` is from previous generation

[kaurao]

The ga_instance.pareto_fronts available after ga_instance.run() is calculated on ga_instance.previous_generation_fitness, it should be updated to reflect ga_instance.last_generation_fitness.

[ahmedfgad]

Thank you! This issue is resolved in a recent commit. Please update to PyGAD 3.3.1.