Use `conda install` #86

Job	Run time
checks / other-checks	1m 4s
checks / check-style	2m 33s
conda-python-build / compute-matrix	1s
wheel-build / compute-matrix	2s
conda-python-build / 12.8.0, 3.12, amd64, rockylinux8	4m 13s
wheel-build / 12.8.0, 3.12, arm64, rockylinux8	4m 40s
conda-python-tests / compute-matrix	3s
conda-python-tests / 12.8.0, 3.12, amd64, ubuntu24.04, v100, latest-driver, latest-deps	5m 9s
wheel-tests / compute-matrix	4s
wheel-tests / 11.8.0, 3.12, arm64, ubuntu20.04, a100, latest-driver, latest-deps	3m 8s
pr-builder / run	1s
	20m 58s

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