fix: prevent duplicates in set-parameters #3558

Job	Run time
lint	3m 57s
test (ubuntu-latest, 3.8)	6m 33s
test (ubuntu-latest, 3.9)	4m 51s
test (macos-latest, 3.8)	5m 39s
test (macos-latest, 3.9)	6m 25s
test (windows-latest, 3.8)	9m 49s
test (windows-latest, 3.9)	9m 54s
test (ubuntu-latest, 3.7, ~/.cache/pip)	5m 43s
test (macos-latest, 3.7.16, ~/Library/Caches/pip)	7m 17s
test (windows-latest, 3.7, ~\AppData\Local\pip\Cache)	9m 56s
bdist	3m 45s
sonar	2m 38s
	1h 16m 27s

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