[VIIRS] Output netcdf not saved with process_data() function

Hi @cmeikle ,

The process_data() function from the VIIRS class is currently not saving the output data to a netcdf file when the input is set to save=True.

The function currently returns the following message:

Error processing data for the time period from 2024-11-28 00:00:00 to 2024-12-01 00:00:00: VIIRS.to_netCDF() missing 1 required positional argument: 'end_time'

The rest of the outputs are still returned correctly.