Merge branch 'switch_to_gpt4mini' into 'master'

gpt4o-mini by default

See merge request postgres-ai/database-lab!920

Author: NikolayS

ui/packages/platform/src/pages/Bot/hooks.tsx

@@ -20,7 +20,7 @@ import { getDebugMessages } from "../../api/bot/getDebugMessages";
 
 const WS_URL = process.env.REACT_APP_WS_URL || '';
 
-const DEFAULT_MODEL_NAME = 'gemini-1.5-pro'
+const DEFAULT_MODEL_NAME = 'gpt-4o-mini'
 
 type ErrorType = {
   code?: number;