[ie/RumbleChannel] Fix extractor (#9092)

Closes #8782
Authored by: vista-narvas, Pranaxcau

yt_dlp/extractor/rumble.py

@@ -383,7 +383,7 @@ class RumbleChannelIE(InfoExtractor):
                 if isinstance(e.cause, HTTPError) and e.cause.status == 404:
                     break
                 raise
-            for video_url in re.findall(r'class=video-item--a\s?href=([^>]+\.html)', webpage):
+            for video_url in re.findall(r'class="[^>"]*videostream__link[^>]+href="([^"]+\.html)"', webpage):
                 yield self.url_result('https://rumble.com' + video_url)
 
     def _real_extract(self, url):