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

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

Author: pre-commit-ci[bot]

Diff for: xarray/backends/zarr.py

@@ -180,7 +180,7 @@ def encode_zarr_attr_value(value):
 
 
 class ZarrArrayWrapper(BackendArray):
-    __slots__ = ("_array", "dtype", "shape", "is_coordinate")
+    __slots__ = ("_array", "dtype", "is_coordinate", "shape")
 
     def __init__(self, zarr_array, is_coordinate: bool):
         # some callers attempt to evaluate an array if an `array` property exists on the object.
@@ -212,6 +212,7 @@ def _vindex(self, key):
 
     def _getitem(self, key):
         from zarr.core.buffer.cpu import buffer_prototype
+
         if self.is_coordinate:
             prototype = buffer_prototype
         else:
@@ -816,7 +817,9 @@ def ds(self):
     def open_store_variable(self, name):
         zarr_array = self.members[name]
         is_coordinate = name in zarr_array.metadata.dimension_names
-        data = indexing.LazilyIndexedArray(ZarrArrayWrapper(zarr_array, is_coordinate=is_coordinate))
+        data = indexing.LazilyIndexedArray(
+            ZarrArrayWrapper(zarr_array, is_coordinate=is_coordinate)
+        )
         try_nczarr = self._mode == "r"
         dimensions, attributes = _get_zarr_dims_and_attrs(
             zarr_array, DIMENSION_KEY, try_nczarr