add back NCCL dependency, pin to NCCL>=2.19 #1272

Job	Run time
devcontainer / build (amd64, 12.5, conda)	53m 53s
checks / other-checks	33s
devcontainer / build (amd64, 12.5, pip)	1h 1m 54s
checks / check-style	1m 3s
wheel-build-cuvs / compute-matrix	4s
conda-cpp-build / compute-matrix	4s
conda-cpp-build / 11.8.0, 3.10, amd64, ubuntu22.04	49m 56s
conda-cpp-build / 12.5.1, 3.10, amd64, ubuntu22.04	34m 39s
conda-cpp-build / 11.8.0, 3.10, arm64, ubuntu22.04	48m 49s
conda-cpp-build / 12.5.1, 3.10, arm64, ubuntu22.04	33m 49s
wheel-build-cuvs / 11.8.0, 3.10, amd64, rockylinux8	33m 6s
wheel-build-cuvs / 12.5.1, 3.10, amd64, rockylinux8	27m 19s
wheel-build-cuvs / 11.8.0, 3.11, amd64, rockylinux8	34m 20s
wheel-build-cuvs / 12.5.1, 3.11, amd64, rockylinux8	8m 50s
wheel-build-cuvs / 11.8.0, 3.12, amd64, rockylinux8	30m 11s
wheel-build-cuvs / 12.5.1, 3.12, amd64, rockylinux8	25m 6s
wheel-build-cuvs / 11.8.0, 3.10, arm64, rockylinux8	37m 50s
wheel-build-cuvs / 12.5.1, 3.10, arm64, rockylinux8	31m 47s
wheel-build-cuvs / 11.8.0, 3.11, arm64, rockylinux8	38m 28s
wheel-build-cuvs / 12.5.1, 3.11, arm64, rockylinux8	32m 42s
wheel-build-cuvs / 11.8.0, 3.12, arm64, rockylinux8	38m 46s
wheel-build-cuvs / 12.5.1, 3.12, arm64, rockylinux8	32m 21s
wheel-tests-cuvs / compute-matrix	2s
wheel-tests-cuvs / 12.5.1, 3.10, amd64, ubuntu22.04, v100, latest-driver, oldest-deps	3m 55s
wheel-tests-cuvs / 11.8.0, 3.12, arm64, ubuntu20.04, a100, latest-driver, latest-deps	5m 21s
conda-python-build	0s
conda-cpp-tests	0s
conda-cpp-checks	0s
rust-build	0s
conda-python-tests	0s
docs-build	0s
pr-builder	1s
	11h 4m 49s

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