Fix for failing tests caused by pydata/xarray#5581

Author: forman

environment.yml

@@ -21,7 +21,7 @@ dependencies:
   - netcdf4 >=1.5.0
   - numba >=0.52
   - numpy >=1.16
-  - pandas >=1.2,<1.3.0  # tests fail with 1.3.0, see #5581
+  - pandas >=1.2,<1.3.0  # tests fail with 1.3.0, see xarray #5581
   - pillow >=6.0
   - pyjwt >=1.7
   - pyproj >=3.0