Add firmware version to Emma userdata

Author: bouwew

userdata/adam_plus_anna_new/core.domain_objects.xml

@@ -402,7 +402,7 @@
 		<vendor_name>Plugwise</vendor_name>
 		<vendor_model>170-01</vendor_model>
 		<hardware_version>1</hardware_version>
-		<firmware_version></firmware_version>
+		<firmware_version>2025-11-10T01:00:00+01:00</firmware_version>
 		<upgrade/>
 		<created_date>2025-10-11T10:08:20.450+02:00</created_date>
 		<modified_date>2025-10-11T10:38:56.730+02:00</modified_date>