Download datasets in ARM wheel tests. (rapidsai#3267)

Datasets are not being downloaded in ARM wheel tests. This PR is a small fix for CI tests that are currently disabled (thus this error does not show up). I caught this while looking over the wheel test logic as a reference.

Authors:
  - Bradley Dice (https://github.com/bdice)

Approvers:
  - AJ Schmidt (https://github.com/ajschmidt8)

URL: rapidsai#3267

.github/workflows/pr.yaml

@@ -108,6 +108,6 @@ jobs:
       # Always want to test against latest dask/distributed.
       test-before-amd64: "cd ./datasets && bash ./get_test_data.sh && cd - && RAPIDS_PY_WHEEL_NAME=pylibcugraph_cu11 rapids-download-wheels-from-s3 ./local-pylibcugraph-dep && pip install --no-deps ./local-pylibcugraph-dep/*.whl && pip install git+https://github.com/dask/[email protected] git+https://github.com/dask/[email protected] git+https://github.com/rapidsai/[email protected]"
       # On arm also need to install cupy from the specific site.
-      test-before-arm64: "RAPIDS_PY_WHEEL_NAME=pylibcugraph_cu11 rapids-download-wheels-from-s3 ./local-pylibcugraph-dep && pip install --no-deps ./local-pylibcugraph-dep/*.whl && pip install cupy-cuda11x -f https://pip.cupy.dev/aarch64 && pip install git+https://github.com/dask/[email protected] git+https://github.com/dask/[email protected] git+https://github.com/rapidsai/[email protected]"
+      test-before-arm64: "cd ./datasets && bash ./get_test_data.sh && cd - && RAPIDS_PY_WHEEL_NAME=pylibcugraph_cu11 rapids-download-wheels-from-s3 ./local-pylibcugraph-dep && pip install --no-deps ./local-pylibcugraph-dep/*.whl && pip install cupy-cuda11x -f https://pip.cupy.dev/aarch64 && pip install git+https://github.com/dask/[email protected] git+https://github.com/dask/[email protected] git+https://github.com/rapidsai/[email protected]"
       test-unittest: "RAPIDS_DATASET_ROOT_DIR=/__w/cugraph/cugraph/datasets pytest -v ./python/cugraph/cugraph/tests --ignore=./python/cugraph/cugraph/tests/mg"
       test-smoketest: "python ci/wheel_smoke_test_cugraph.py"