Update Cython lower bound pin to 3.2.2 (#601)

## Summary

Refs rapidsai/build-planning#229

Updates the Cython lower bound pin to `>=3.2.2`. The `<3.2.0` upper bound was added as a workaround for a code-generation bug introduced in Cython 3.2.0. That bug was fixed in Cython 3.2.1 (cython/cython#7313) and additional related fixes landed in Cython 3.2.2 (cython/cython#7320). Cython 3.2.2 has been released, so we can now raise the lower bound and remove the upper bound cap.

Changes:
- Update `dependencies.yaml`: set `cython>=3.2.2` (no upper bound), remove the old workaround comment
- Update `conda/recipes/*/recipe.yaml`: same pin change (not managed by `rapids-dependency-file-generator`)
- Regenerate all derived files via `rapids-dependency-file-generator`

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

Approvers:
  - Gil Forsyth (https://github.com/gforsyth)

URL: #601

Author: vyasr

conda/environments/all_cuda-129_arch-aarch64.yaml

@@ -17,7 +17,7 @@ dependencies:
 - cudf==26.4.*,>=0.0.0a0
 - cupy>=13.6.0
 - cxx-compiler
-- cython>=3.0.0,<3.2.0
+- cython>=3.2.2
 - dask-cuda==26.4.*,>=0.0.0a0
 - dask-cudf==26.4.*,>=0.0.0a0
 - doxygen=1.9.1

conda/environments/all_cuda-129_arch-x86_64.yaml

@@ -17,7 +17,7 @@ dependencies:
 - cudf==26.4.*,>=0.0.0a0
 - cupy>=13.6.0
 - cxx-compiler
-- cython>=3.0.0,<3.2.0
+- cython>=3.2.2
 - dask-cuda==26.4.*,>=0.0.0a0
 - dask-cudf==26.4.*,>=0.0.0a0
 - doxygen=1.9.1

conda/environments/all_cuda-131_arch-aarch64.yaml

@@ -17,7 +17,7 @@ dependencies:
 - cudf==26.4.*,>=0.0.0a0
 - cupy>=13.6.0
 - cxx-compiler
-- cython>=3.0.0,<3.2.0
+- cython>=3.2.2
 - dask-cuda==26.4.*,>=0.0.0a0
 - dask-cudf==26.4.*,>=0.0.0a0
 - doxygen=1.9.1

conda/environments/all_cuda-131_arch-x86_64.yaml

@@ -17,7 +17,7 @@ dependencies:
 - cudf==26.4.*,>=0.0.0a0
 - cupy>=13.6.0
 - cxx-compiler
-- cython>=3.0.0,<3.2.0
+- cython>=3.2.2
 - dask-cuda==26.4.*,>=0.0.0a0
 - dask-cudf==26.4.*,>=0.0.0a0
 - doxygen=1.9.1

conda/recipes/ucxx/recipe.yaml

@@ -278,7 +278,7 @@ outputs:
         - ${{ stdlib("c") }}
       host:
         - cuda-version =${{ cuda_version }}
-        - cython >=3.0.0,<3.2.0
+        - cython >=3.2.2
         # 'nvidia-ml-py' provides the 'pynvml' module
         - nvidia-ml-py>=12
         - pip
@@ -392,7 +392,7 @@ outputs:
       host:
         - ${{ pin_subpackage("ucxx", exact=True) }}
         - cuda-version =${{ cuda_version }}
-        - cython >=3.0.0,<3.2.0
+        - cython >=3.2.2
         - pip
         - python =${{ python }}
         - rapids-build-backend >=0.4.0,<0.5.0

dependencies.yaml

@@ -181,7 +181,7 @@ dependencies:
       - output_types: [conda, requirements, pyproject]
         packages:
           - *cmake_ver
-          - cython>=3.0.0,<3.2.0
+          - cython>=3.2.2
           - ninja
   rapids_build_skbuild:
     common:

python/ucxx/pyproject.toml

@@ -60,7 +60,7 @@ dependencies-file = "../../dependencies.yaml"
 matrix-entry = "cuda_suffixed=true"
 requires = [
     "cmake>=3.26.4,!=3.30.0",
-    "cython>=3.0.0,<3.2.0",
+    "cython>=3.2.2",
     "librmm==26.4.*,>=0.0.0a0",
     "libucxx==0.49.*,>=0.0.0a0",
     "ninja",