postgres escape column name in updated_at_rows query

This is necessary if, for example, the column name is not all lowercase

parsons/databases/postgres/postgres.py

@@ -129,7 +129,7 @@ def get_updated_rows(
         parameters = []
 
         if cutoff_value is not None:
-            sql += f"WHERE {updated_at_column} > %s"
+            sql += f'WHERE "{updated_at_column}" > %s'
             parameters.append(cutoff_value)
 
         if chunk_size: