Add backports if Python < 3.9

database.py

@@ -3,7 +3,11 @@ import sqlite3
 from datetime import datetime, time
 from pprint import pformat
 from textwrap import dedent
+
+try:
     from zoneinfo import ZoneInfo
+except ImportError:
+    from backports.zoneinfo import ZoneInfo  # type: ignore
 
 from model import Location, Meal, Schedule, WeekDay
 from seed import get_seed_locations, get_seed_meals