Generator: Update SDK /services/kms (#3534)

## v1.0.0
- Switch to API version `v1` of STACKIT KMS service (previously `v1beta`)
- **Breaking Change:** Removal of deprecated `Backend` model
- **Breaking Change:** Remove `Backend` field and mark `Protection` field as required in `Key`, `CreateKeyPayload`, `CreateWrappingKeyPayload` and `WrappingKey` model

---------

Co-authored-by: Marcel Jacek <[email protected]>

Author: rubenhoenle

CHANGELOG.md

@@ -6,6 +6,10 @@
     - **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
+- `kms`: [v1.0.0](services/kms/CHANGELOG.md#v100) 
+  - Switch to API version `v1` of STACKIT KMS service (previously `v1beta`)
+  - **Breaking Change:** Removal of deprecated `Backend` model
+  - **Breaking Change:** Remove `Backend` field and mark `Protection` field as required in `Key`, `CreateKeyPayload`, `CreateWrappingKeyPayload` and `WrappingKey` model
 
 ## Release (2025-08-29)
 - `observability`: 

examples/kms/kms.go

@@ -41,7 +41,6 @@ func main() {
 		CreateKeyPayload(
 			kms.CreateKeyPayload{
 				Algorithm:   kms.ALGORITHM_AES_256_GCM.Ptr(),
-				Backend:     kms.BACKEND_SOFTWARE.Ptr(),
 				Description: utils.Ptr("A test key"),
 				DisplayName: utils.Ptr("test-key"),
 				Purpose:     kms.PURPOSE_SYMMETRIC_ENCRYPT_DECRYPT.Ptr(),

services/kms/CHANGELOG.md

@@ -1,3 +1,8 @@
+## v1.0.0
+- Switch to API version `v1` of STACKIT KMS service (previously `v1beta`)
+- **Breaking Change:** Removal of deprecated `Backend` model
+- **Breaking Change:** Remove `Backend` field and mark `Protection` field as required in `Key`, `CreateKeyPayload`, `CreateWrappingKeyPayload` and `WrappingKey` model
+
 ## v0.6.0
 - **Breaking Change:** Updated `NewKey()` and `NewWrappingKey()` constructor signatures to require new `AccessScope` parameter
 - **Breaking Change:** Added new required `AccessScope` field to `Key` and `WrappingKey` models

services/kms/VERSION

@@ -1 +1 @@
-v0.6.0
+v1.0.0