[preprocessor] fixed the image size for DR-GAN light

bob/bio/face/config/preprocessor/drgan_light.py

 import bob.bio.face
 
 # This is the size of the image that this model expects
-CROPPED_IMAGE_HEIGHT = 96
-CROPPED_IMAGE_WIDTH = 96
+CROPPED_IMAGE_HEIGHT = 64
+CROPPED_IMAGE_WIDTH = 64
 
 RIGHT_EYE_POS = (CROPPED_IMAGE_HEIGHT // 5, CROPPED_IMAGE_WIDTH // 4 - 1)
 LEFT_EYE_POS = (CROPPED_IMAGE_HEIGHT // 5, CROPPED_IMAGE_WIDTH // 4 * 3)