compat: CuDF 26.02 (#6795)

Author: hoxbro

pixi.toml

@@ -221,7 +221,7 @@ NUMBA_CUDA_LOW_OCCUPANCY_WARNINGS = "0"
 
 [feature.test-gpu.dependencies]
 cuda-version = "13.1.*"
-cudf = "25.12.*"
+cudf = "26.02.*"
 cupy = "*"
 # cuspatial = "*"  # Paused development: https://docs.rapids.ai/notices/rsn0045/
 librmm = { version = "*", channel = "rapidsai" }

pyproject.toml

@@ -149,8 +149,6 @@ filterwarnings = [
     "ignore:'_UnionGenericAlias' is deprecated and slated for removal in Python 3.17", # OK
     # 2025-11
     "ignore:Inheriting from 'holoviews.element.comparison.ComparisonInterface::holoviews.tests.element", # https://github.com/holoviz/holoviews/pull/6735
-    # 2026-01
-    "ignore:The cuda.core.experimental namespace is deprecated:DeprecationWarning:numba.cuda", # https://github.com/rapidsai/cudf/pull/20933
 ]
 
 [tool.coverage]