Add entry in update.lst for latest guntamatic binding changes (#1708)

Signed-off-by: MikeTheTux <[email protected]>
Co-authored-by: lsiepel <[email protected]>

distributions/openhab/src/main/resources/bin/update.lst

@@ -157,6 +157,9 @@ ALERT;MQTT Binding (Home Assistant): Thing types and channel IDs have been signi
 ALERT;MQTT Binding (Home Assistant): Legacy schema vacuums are no longer supported.
 ALERT;Pentair Binding: EasyTouch thing has been renamed to more generic Controller and all channels have been organized into groups. You will need to reconfigure your setup to the new thing structure.
 
+[5.0.0]
+ALERT;Guntamatic Binding: The Binding now uses channel groups and the dynamic status channels now have an index prefix to allow multiple channels with the same description. Existing Items will need to be adjusted.
+
 [[PRE]]
 [2.2.0]
 DEFAULT;$OPENHAB_USERDATA/etc/org.ops4j.pax.logging.cfg