Generator: Update SDK /services/serverupdate (#1240)

* Generate serverupdate

* chore: update changelog

* Update CHANGELOG.md

---------

Co-authored-by: Rüdiger Schmitz <[email protected]>

Author: stackit-pipeline

services/serverupdate/CHANGELOG.md

@@ -1,3 +1,7 @@
+## v0.2.3 (2024-12-17)
+
+- **Bugfix:** Correctly handle nullable attributes in model types
+
 ## v0.2.2 (2024-12-02)
 
 - **Bugfix:** `Id` field of `Update` model is now of type `int64` (was `string`)