`np.int` deprecated and causing issues in FUNMAP

[hello-binit]

stretch_ros2/stretch_funmap/stretch_funmap/max_height_image.py

Lines 177 to 178 in 842d83c

	num_x_bins = np.int(np.ceil(self.voi.x_in_m / self.m_per_pix))
	num_y_bins = np.int(np.ceil(self.voi.y_in_m / self.m_per_pix))

and other places in the FUNMAP codebase.