update livestream url

app.py

@@ -246,7 +246,7 @@ with demo:
             <div style="position: relative; width: 100%; padding-top: 56.25%;">
                 <iframe 
                     style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;" 
-                    src="https://www.youtube.com/embed/uXQYRIOTTHo" 
+                    src="https://www.youtube.com/embed/mGlbI54SxQg" 
                     title="Bambu A1mini Livestream" 
                     frameborder="0" 
                     allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"