[iqiyi] Update key (closes #7896)

youtube_dl/extractor/iqiyi.py

@@ -205,8 +205,8 @@ class IqiyiIE(InfoExtractor):
 
     def get_enc_key(self, swf_url, video_id):
         # TODO: automatic key extraction
-        # last update at 2015-12-06 for Zombie::bite
-        enc_key = '3719f6a1da83ee0aee3488d8802d7696'[::-1]
+        # last update at 2015-12-18 for Zombie::bite
+        enc_key = '8b6b683780897eb8d9a48a02ccc4817d'[::-1]
         return enc_key
 
     def _real_extract(self, url):