Bump imageio from 2.32.0 to 2.33.0 in /requirements #633

Job	Run time
Build wheels on MacOS	0s
Build documentation	3m 46s
Build and Test (3.9, ubuntu-latest)	3m 17s
Build and Test (3.9, windows-latest)	4m 6s
Build and Test (3.10, ubuntu-latest)	3m 17s
Build and Test (3.10, windows-latest)	4m 14s
Build and Test (3.11, ubuntu-latest)	3m 14s
Build and Test (3.11, windows-latest)	3m 24s
Build and Test (3.12, ubuntu-latest)	3m 18s
Build and Test (3.12, windows-latest)	4m 24s
Upload development documentation	0s
Release	0s
Upload release documentation	0s
	33m 0s

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