chore(opensearch): Add changelogs

Signed-off-by: Alexander Dahmen <alexander.dahmen@inovex.de>

Author: Fyusel

CHANGELOG.md

@@ -12,6 +12,11 @@
 - `modelexperiements`
   - [v0.1.0](services/modelexperiments/CHANGELOG.md#v010)
     - **New**: API for STACKIT modelexperiments
+- `opensearch`:
+  - [v1.0.0](services/opensearch/CHANGELOG.md#v100)
+    - **Breaking Change:** The region is no longer specified within the client configuration. Instead, the region must be passed as a parameter to any region-specific request.
+    - **Deprecation:** `tls_ciphers`, `tls_protocols` from `InstanceParameters` model are deprecated and will be removed 2026-12-12.
+    - **Feature:** Added optional `CreateCredentialsPayload`.
 
 ## Release (2026-13-05)
 - `auditlog`:

services/opensearch/CHANGELOG.md

@@ -1,3 +1,8 @@
+## v1.0.0
+- **Breaking Change:** The region is no longer specified within the client configuration. Instead, the region must be passed as a parameter to any region-specific request.
+- **Deprecation:** `tls_ciphers`, `tls_protocols` from `InstanceParameters` model are deprecated and will be removed 2026-12-12.
+- **Feature:** Added optional `CreateCredentialsPayload`.
+
 ## v0.5.0
 - **Feature:** regenerate with openapi-generator v7.22.0
 

services/opensearch/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "stackit-opensearch"
-version = "v0.5.0"
+version = "v1.0.0"
 description = "STACKIT Opensearch API"
 authors = [{ name = "STACKIT Developer Tools", email = "developer-tools@stackit.cloud" }]
 requires-python = ">=3.9,<4.0"