Update app.js

app.js

@@ -274,6 +274,12 @@ app.get('/ai/v1/models', async (req, res) => {
             "object": "model",
             "created": 1610076065,
             "owned_by": "anthropic"
+        },
+        {
+            "id": "gemini-exp-1206",
+            "object": "model",
+            "created": 1610076065,
+            "owned_by": "google"
         }
     ]
 };