Update AI PRO model

Author: danielr18

functions/src/discussion/eventHandlers/onMessageCreated.ts

@@ -147,7 +147,7 @@ async function createAiReply(message: DiscussionMessage) {
   ).filter(isDefined);
 
   const chatCompletion = await openai.chat.completions.create({
-    model: aiMentioned === "@aipro" ? "gpt-4-turbo" : "gpt-3.5-turbo",
+    model: aiMentioned === "@aipro" ? "gpt-4o" : "gpt-3.5-turbo",
     messages: [
       ...chatHistory,
       { role: "assistant", content: prompt }, // Using the constructed prompt as the assistant's input