Fix missing bracket (online merge editor mistake)

Author: charles-turner-1

tests/utils.py

@@ -19,6 +19,7 @@
 mixed_cat_sample_cmip6 = os.path.join(here, 'sample-catalogs/cmip6-bcc-mixed-formats.json')
 access_columns_with_iterables_cat = os.path.join(
     here, 'sample-catalogs/access-columns-with-iterables.json'
+)
 
 access_columns_with_tuples_cat = os.path.join(
     here, 'sample-catalogs/access-columns-with-tuples.json'