ruff automatic fixes

demo/demo_tsid_talos_gripper_closed_kinematic_chain.py

exercizes/ex_1_ur5.py

exercizes/ex_3_biped_balance_with_gui.py

exercizes/ex_4_conf.py

exercizes/ex_4_long_conf.py

exercizes/ex_4_talos_conf.py

...zes/notebooks/ex_0_joint_space_inverse_dynamics_arm.ipynb

exercizes/notebooks/ex_1_com_sin_track_talos.ipynb

exercizes/notebooks/ex_3_biped_balance_with_gui.ipynb

exercizes/plot_utils.py

exercizes/romeo_conf.py

exercizes/test_cop_task.py

exercizes/ur5_conf.py

exercizes/ur5_reaching_conf.py

tests/python/generator.py