Merge branch 'main' into groupby-dask

* main: (63 commits)
  Add close() method to DataTree and use it to clean-up open files in tests (pydata#9651)
  Change URL for pydap test (pydata#9655)
  Fix multiple grouping with missing groups (pydata#9650)
  flox: Properly propagate multiindex (pydata#9649)
  Update Datatree html repr to indicate inheritance (pydata#9633)
  Re-implement map_over_datasets using group_subtrees (pydata#9636)
  fix zarr intersphinx (pydata#9652)
  Replace black and blackdoc with ruff-format (pydata#9506)
  Fix error and missing code cell in io.rst (pydata#9641)
  Support alternative names for the root node in DataTree.from_dict (pydata#9638)
  Updates to DataTree.equals and DataTree.identical (pydata#9627)
  DOC: Clarify error message in open_dataarray (pydata#9637)
  Add zip_subtrees for paired iteration over DataTrees (pydata#9623)
  Type check datatree tests (pydata#9632)
  Add missing `memo` argument to DataTree.__deepcopy__ (pydata#9631)
  Bug fixes for DataTree indexing and aggregation (pydata#9626)
  Add inherit=False option to DataTree.copy() (pydata#9628)
  docs(groupby): mention deprecation of `squeeze` kwarg (pydata#9625)
  Migration guide for users of old datatree repo (pydata#9598)
  Reimplement Datatree typed ops (pydata#9619)
  ...

Author: dcherian

.github/FUNDING.yml

@@ -1,2 +1,2 @@
 github: numfocus
-custom: http://numfocus.org/donate-to-xarray
+custom: https://numfocus.org/donate-to-xarray

.github/workflows/benchmarks-last-release.yml

@@ -22,7 +22,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up conda environment
-        uses: mamba-org/setup-micromamba@v1
+        uses: mamba-org/setup-micromamba@v2
         with:
           environment-file: ${{env.CONDA_ENV_FILE}}
           environment-name: xarray-tests