Aspect ratio should be a float.

Author: henrikmidtiby

manim/_config/utils.py

@@ -1104,7 +1104,7 @@ def pixel_height(self, value: int) -> None:
         self._set_pos_number("pixel_height", value, False)
 
     @property
-    def aspect_ratio(self) -> int:
+    def aspect_ratio(self) -> float:
         """Aspect ratio (width / height) in pixels (--resolution, -r)."""
         return self._d["pixel_width"] / self._d["pixel_height"]