Add dithering augmentation #1874

Job	Run time
Check that transforms docs are not outdated (3.8)	37s
Check code formatting with Black, isort, mypy, flake8 (3.11)	17s
Test and lint (ubuntu-latest, 3.8)	2m 48s
Test and lint (ubuntu-latest, 3.9)	3m 54s
Test and lint (ubuntu-latest, 3.10)	4m 43s
Test and lint (ubuntu-latest, 3.11)	5m 5s
Test and lint (windows-latest, 3.8)	6m 39s
Test and lint (windows-latest, 3.9)	6m 39s
Test and lint (windows-latest, 3.10)	8m 49s
Test and lint (windows-latest, 3.11)	8m 7s
Test and lint (macos-11, 3.8)	3m 52s
Test and lint (macos-11, 3.9)	6m 2s
Test and lint (macos-11, 3.10)	6m 0s
Test and lint (macos-11, 3.11)	5m 37s
	1h 9m 9s

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