FutureWarning: xarray will not decode timedelta values based on the presence of a timedelta-like units attribute by default

[nate-kean]

Describe the bug

  /root/conda/envs/RAiDER/lib/python3.12/site-packages/RAiDER/aria/prepFromGUNW.py:255: FutureWarning: In a future version, xarray
will not decode timedelta values based on the presence of a timedelta-like units attribute by default. Instead it will rely on the
presence of a timedelta64 dtype attribute, which is now xarray's default way of encoding timedelta64 values. To continue decoding
timedeltas based on the presence of a timedelta-like units attribute, users will need to explicitly opt-in by passing True or
CFTimedeltaCoder(decode_via_units=True) to decode_timedelta. To silence this warning, set decode_timedelta to True, False, or a
'CFTimedeltaCoder' instance.
    with xr.open_dataset(self.path_gunw, group=group) as ds:

To Reproduce
Run test/test_GUNW.py::test_GUNW_workflow_fails_if_a_download_fails

Desktop (please complete the following information):

• RAiDER git tag: dev b837793
• OS: Linux 6.6.87.2-microsoft-standard-WSL2 x86_64

Additional context
Add any other context about the problem her