Generator: Update SDK /services/observability (#3531)

Co-authored-by: Marcel Jacek <Marcel.Jacek@stackit.cloud>

Author: stackit-pipeline

CHANGELOG.md

@@ -1,8 +1,11 @@
 ## Release (2025-MM-DD)
 - `intake`: [v0.1.1](services/intake/CHANGELOG.md#v011) 
   - Mark fields `MaxMessageSizeKiB` and `MaxMessagesPerHour` as optional instead of required in `UpdateIntakeRunnerPayload` model struct 
-- `observability`: [v0.12.0](services/observability/CHANGELOG.md#v0120) 
-  - **Feature:** Add `MetricsEndpointUrl` field to `InstanceSensitiveData` model struct
+- `observability`:
+  - [v0.13.0](services/observability/CHANGELOG.md#v0130)
+    - **Feature:** Add support for HTTP checks and cert checks
+  - [v0.12.0](services/observability/CHANGELOG.md#v0120) 
+    - **Feature:** Add `MetricsEndpointUrl` field to `InstanceSensitiveData` model struct
 
 ## Release (2025-08-29)
 - `observability`: 

services/observability/CHANGELOG.md

@@ -1,3 +1,6 @@
+## v0.13.0
+- **Feature:** Add support for HTTP checks and cert checks
+
 ## v0.12.0
 - **Feature:** Add `MetricsEndpointUrl` field to `InstanceSensitiveData` model struct
 

services/observability/VERSION

@@ -1 +1 @@
-v0.12.0
+v0.13.0