Make validation of unique node outputs much faster #60

Job	Run time
e2e-tests (ubuntu-latest, 3.8) / e2e-tests	12m 6s
e2e-tests (ubuntu-latest, 3.9) / e2e-tests	12m 7s
e2e-tests (ubuntu-latest, 3.7) / e2e-tests	14m 18s
e2e-tests (ubuntu-latest, 3.10) / e2e-tests	14m 32s
e2e-tests (windows-latest, 3.10) / e2e-tests	29m 15s
e2e-tests (windows-latest, 3.7) / e2e-tests	26m 13s
e2e-tests (windows-latest, 3.8) / e2e-tests	24m 30s
e2e-tests (windows-latest, 3.9) / e2e-tests	27m 42s
lint (ubuntu-latest, 3.10) / lint	5m 28s
pip-compile (ubuntu-latest, 3.10) / pip-compile	4m 49s
pip-compile (ubuntu-latest, 3.7) / pip-compile	4m 5s
pip-compile (ubuntu-latest, 3.8) / pip-compile	4m 10s
pip-compile (ubuntu-latest, 3.9) / pip-compile	4m 49s
pip-compile (windows-latest, 3.7) / pip-compile	12m 48s
pip-compile (windows-latest, 3.10) / pip-compile	11m 40s
pip-compile (windows-latest, 3.8) / pip-compile	13m 5s
pip-compile (windows-latest, 3.9) / pip-compile	9m 48s
unit-tests (ubuntu-latest, 3.10) / unit-tests	21m 43s
unit-tests (ubuntu-latest, 3.8) / unit-tests	13m 42s
unit-tests (ubuntu-latest, 3.7) / unit-tests	18m 30s
unit-tests (ubuntu-latest, 3.9) / unit-tests	12m 47s
unit-tests (windows-latest, 3.10) / unit-tests	24m 39s
unit-tests (windows-latest, 3.7) / unit-tests	22m 58s
unit-tests (windows-latest, 3.9) / unit-tests	25m 19s
unit-tests (windows-latest, 3.8) / unit-tests	22m 14s
	6h 33m 17s

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