FYI: cdms2 conversion methods are being deprecated in xarray

[tomvothecoder]

The Xarray CI/CD build is breaking because cdms2 is incompatible with numpy>=1.25 and python>=3.11 (pydata/xarray#7707 (comment)). CDAT will be deprecated at the end of 2023 and there are no plans to maintain the library and its modules' build dependencies.

As a result, Xarray is deprecating the xarray.DataArray.to_cdms2 and xarray.DataArray.from_cdms2 methods in the next release of Xarray (pydata/xarray#7876).