Bump libcudf to 26.04.00

Author: 0ax1

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup conda environment
         run: |
           conda create -n build-env -y -c rapidsai -c conda-forge -c nvidia \
-            libcudf \
+            libcudf=26.04.00 \
             cmake \
             ninja \
             patchelf \