Fix cupy dependency in pyproject.toml (#5705)

The cupy dependency in pyproject.toml is currently wrong due to changes made in the devcontainers PR. Unlike in conda environments where simultaneous installation of both pip and conda cupy results in coexistence followed by clobbering at import time, since this approach results in two pip installations (one wheel and one from source) one simply overwrites the other, so we haven't seen serious issues yet. The only manifestation at present is slower CI due to cupy being compiled during the wheel builds.

Authors:
  - Vyas Ramasubramani (https://github.com/vyasr)

Approvers:
  - Ray Douglass (https://github.com/raydouglass)
  - Dante Gama Dessavre (https://github.com/dantegd)

URL: #5705

dependencies.yaml

@@ -236,7 +236,7 @@ dependencies:
           - matrix: {cuda: "11.8"}
             packages: &py_run_packages_cu11
               - cudf-cu11==24.2.*
-              - cupy-cuda11x>=12.0.0
+              - &cupy_pyproject_cu11 cupy-cuda11x>=12.0.0
               - dask-cudf-cu11==24.2.*
               - *pylibraft_cu11
               - raft-dask-cu11==24.2.*
@@ -247,11 +247,10 @@ dependencies:
           - matrix: null
             packages:
               - *cudf_conda
-              - *cupy_conda
+              - *cupy_pyproject_cu11
               - *dask_cudf_conda
               - *pylibraft_conda
               - *raft_dask_conda
-              - *pylibraft_conda
               - *rmm_conda
   cudatoolkit:
     specific:

python/pyproject.toml

@@ -56,7 +56,7 @@ license = { text = "Apache 2.0" }
 requires-python = ">=3.9"
 dependencies = [
     "cudf==24.2.*",
-    "cupy>=12.0.0",
+    "cupy-cuda11x>=12.0.0",
     "dask-cuda==24.2.*",
     "dask-cudf==24.2.*",
     "joblib>=0.11",