[CI] Compatibility with isort 6.0 (dmlc#11188)

Author: hcho3

tests/test_distributed/test_gpu_with_dask/test_gpu_with_dask.py

@@ -17,7 +17,9 @@
 from xgboost.testing.dask import get_rabit_args
 from xgboost.testing.params import hist_parameter_strategy
 
-from ..test_with_dask.test_with_dask import generate_array
+from ..test_with_dask.test_with_dask import (
+    generate_array,
+)
 from ..test_with_dask.test_with_dask import kCols as random_cols
 from ..test_with_dask.test_with_dask import (
     make_categorical,