chore: update models configuration to reorder

Author: mert-ergun

crossbar_llm/backend/models_config.py

@@ -1,9 +1,9 @@
 MODELS_CONFIG = {
     "OpenAI": [
+        "gpt-5-mini",
         "gpt-5.1",
         "gpt-5",
         "gpt-5-nano",
-        "gpt-5-mini",
         "gpt-4o",
         "gpt-4.1",
         "gpt-4o-mini",
@@ -19,8 +19,8 @@
         "claude-opus-4-1",
     ],
     "Google": [
-        "gemini-3-pro-preview",
         "gemini-3-flash-preview",
+        "gemini-3-pro-preview",
         "gemini-2.5-pro",
         "gemini-2.5-flash",
     ],