Add note about Thing action change (#1647)

Signed-off-by: Jacob Laursen <[email protected]>

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

@@ -132,6 +132,7 @@ ALERT;Twitter Binding has become X. All related references to Twitter and Tweets
 
 [4.2.0]
 ALERT;AndroidTV Binding: The thing configuration of 'port' has been renamed and split to 'googletvPort' and 'shieldtvPort'
+ALERT;Energi Data Service Binding: Thing action calculatePrice now returns 'null' if price data is missing within the requested period. Rules may need to be adjusted.
 ALERT;evcc Binding: Update to evcc API version 0.123.1 results in several new or updated channels. Existing Items will need to be adjusted.
 ALERT;ISM8 Binding: Most channels have changed and are now using Units of Measurements. Items must be adapted and the things must be recreated.
 ALERT;JavaScript Scripting Automation: The 'Item' suffix has been removed from Item.type, i.e. 'SwitchItem' becomes 'Switch'.