Add data update coordinator to Whois (#64846)

Co-authored-by: Joakim Sørensen <joasoe@gmail.com>

homeassistant/components/whois/const.py

@@ -1,6 +1,7 @@
 """Constants for the Whois integration."""
 from __future__ import annotations
 
+from datetime import timedelta
 import logging
 from typing import Final
 
@@ -11,6 +12,8 @@ PLATFORMS = [Platform.SENSOR]
 
 LOGGER = logging.getLogger(__package__)
 
+SCAN_INTERVAL = timedelta(hours=24)
+
 DEFAULT_NAME = "Whois"
 
 ATTR_EXPIRES = "expires"