CI: xarray upgrade to 0.19 broke CI Checks pipeline
Xarray was recently upgrade from 0.18.2 to 0.19 in our ci. This broke the checks pipeline

Passing:
https://github.com/pandas-dev/pandas/runs/3155104841

Failing:
https://github.com/pandas-dev/pandas/pull/42713/checks?check_run_id=3155841275