Update release_notes.md

Author: Jonas-Isr

docs/release_notes.md

@@ -21,6 +21,10 @@
 - [Orchestration] `OrchestrationTemplate.withTemplate()` has been deprecated. Please use `OrchestrationTemplate.withTemplateMessages()` instead.
 - [Orchestration] The method `createConfig()` is removed from `ContentFilter`, `AzureContentFilter` and `LlamaGuardFilter` and is replaced by `createInputFilterConfig()` and `createOutputFilterConfig()`.
 
+- [Prompt Registry] Resource group has been added as a optional parameter to all endpoints. Set it to `"default"` if it was not set before. Examples:
+  - `client.importPromptTemplate(File)` --> `client.importPromptTemplate("default", File)`.
+  - `client.parsePromptTemplateById(id, false, inputParams)` --> `client.parsePromptTemplateById(id, "default", false, inputParams)`.
+
 ### ✨ New Functionality
 
 - [Orchestration] Added support for [transforming a JSON output into an entity](https://sap.github.io/ai-sdk/docs/java/orchestration/chat-completion#json_schema)