Update auto_delete_conf.py

.github/workflows/auto_delete_conf.py

@@ -31,7 +31,8 @@ def get_month(date_str):
         if conf_month:
             # Calculate the next month considering year rollover
             next_month = (conf_month % 12) + 1
-            next_month_year = current_year if next_month > conf_month else current_year + 1
+            # Use the same year unless it rolls over to January
+            next_month_year = current_year if conf_month < 12 else current_year + 1
 
             # Determine if the conference is in the past
             if (current_year > next_month_year) or (current_year == next_month_year and current_month > next_month):