Bump Python requirement imageio to 2.24.0

requirements.txt

 arkindex-client==1.0.11
 editdistance==0.6.1
 fontTools==4.38.0
-imageio==2.22.4
+imageio==2.24.0
 networkx==2.8.8
 numpy==1.23.5
 opencv-python==4.6.0.66