[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

xarray/tests/test_backends.py

@@ -69,6 +69,7 @@
     requires_dask,
     requires_fsspec,
     requires_h5netcdf,
+    requires_h5netcdf_ros3,
     requires_iris,
     requires_netCDF4,
     requires_pseudonetcdf,
@@ -77,7 +78,6 @@
     requires_scipy,
     requires_scipy_or_netCDF4,
     requires_zarr,
-    requires_h5netcdf_ros3,
 )
 from xarray.tests.test_coding_times import (
     _ALL_CALENDARS,