fix code for Argentina BUR5

UNFCCC_GHG_data/UNFCCC_reader/Argentina/read_ARG_BUR5_from_csv.py

@@ -99,6 +99,7 @@ data_proc_pm2 = process_data_for_country(
 current_source = data_proc_pm2.coords["source"].values[0]
 data_temp = data_proc_pm2.pr.loc[{"source": current_source}]
 data_proc_pm2 = data_proc_pm2.pr.set("source", 'BUR_NIR', data_temp)
+data_proc_pm2 = data_proc_pm2.pr.loc[{"source": ["BUR_NIR"]}]
 
 # ###
 # save data to IF and native format

UNFCCC_GHG_data/helper/functions.py

@@ -221,6 +221,7 @@ def process_data_for_country(
                     )
 
         # aggregate categories
+        # TODO replace by primap2 function once it is in primap2 stable
         if "aggregate_cats" in processing_info_country:
             data_country = data_country.pr.dequantify()
             if "agg_tolerance" in processing_info_country: