Fix physics/n_body_simulation.py

Author: MaximSmolskiy

physics/n_body_simulation.py

@@ -240,7 +240,7 @@ def plot(
         ax.add_patch(patch)
 
     # Function called at each step of the animation
-    def update(frame: int) -> list[plt.Circle]:
+    def update(frame: int) -> list[plt.Circle]:  # noqa: ARG001
         update_step(body_system, DELTA_TIME, patches)
         return patches