fix: [OpenAI] Update models list of OpenAI models. (#444)

* fix models list of OpenAI models.

* Update release notes

---------

Co-authored-by: Jonas Israel <[email protected]>

Author: Jonas-Isr

docs/release_notes.md

@@ -13,6 +13,7 @@
 ### ✨ New Functionality
 
 - [OpenAI] [Add convenience for tool definition, parsing function calls and tool execution](https://sap.github.io/ai-sdk/docs/java/foundation-models/openai/chat-completion#executing-tool-calls)
+- [OpenAI] Added the following new models: `o4-mini`, `o3`, `gpt-4.1`, `gpt-4.1-nano`, and `gpt-4.1-mini` 
 - [Orchestration] Added new model DeepSeek-R1: `OrchestrationAiModel.DEEPSEEK_R1`
 - [Orchestration] [Tool execution fully enabled](https://sap.github.io/ai-sdk/docs/java/spring-ai/orchestration#tool-calling)
 

foundation-models/openai/src/main/java/com/sap/ai/sdk/foundationmodels/openai/OpenAiModel.java

@@ -76,6 +76,21 @@ public record OpenAiModel(@Nonnull String name, @Nullable String version) implem
   public static final OpenAiModel TEXT_EMBEDDING_3_SMALL =
       new OpenAiModel("text-embedding-3-small", null);
 
+  /** Azure OpenAI GPT-o4 Mini model */
+  public static final OpenAiModel O4_MINI = new OpenAiModel("o4-mini", null);
+
+  /** Azure OpenAI GPT-o3 model */
+  public static final OpenAiModel O3 = new OpenAiModel("o3", null);
+
+  /** Azure OpenAI GPT-4.1 model */
+  public static final OpenAiModel GPT_41 = new OpenAiModel("gpt-4.1", null);
+
+  /** Azure OpenAI GPT-4.1-nano model */
+  public static final OpenAiModel GPT_41_NANO = new OpenAiModel("gpt-4.1-nano", null);
+
+  /** Azure OpenAI GPT-4.1-mini model */
+  public static final OpenAiModel GPT_41_MINI = new OpenAiModel("gpt-4.1-mini", null);
+
   /**
    * Azure OpenAI Text Embedding ADA 002 model
    *