Reduce update interval in Ondilo Ico (#116989)

Ondilo: reduce update interval

The API seems to have sticter rate-limiting and frequent requests fail
with HTTP 400.

Fixes #116593

homeassistant/components/ondilo_ico/coordinator.py

@@ -24,7 +24,7 @@ class OndiloIcoCoordinator(DataUpdateCoordinator[list[dict[str, Any]]]):
             hass,
             logger=_LOGGER,
             name=DOMAIN,
-            update_interval=timedelta(minutes=5),
+            update_interval=timedelta(minutes=20),
         )
         self.api = api