re-enable single gpu dask python tests #3546

Job	Run time
devcontainer / build (amd64, 12.0, conda)	5m 44s
devcontainer / build (amd64, 12.0, pip)	6m 37s
checks / other-checks	43s
checks / check-style	1m 18s
wheel-build-pylibcugraph	0s
conda-cpp-build	0s
wheel-tests-pylibcugraph	0s
conda-python-build	0s
conda-cpp-tests	0s
wheel-build-cugraph	0s
wheel-build-nx-cugraph	0s
conda-notebook-tests	0s
conda-python-tests	0s
docs-build	0s
wheel-tests-cugraph	0s
wheel-tests-nx-cugraph	0s
pr-builder	0s
	14m 22s

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