Bumped CacheControl to v0.12.6

requirements.txt

 APScheduler == 3.5.3
 babelfish == 0.5.5
 bencode3 == 0.1.0
-CacheControl == 0.12.5
+CacheControl == 0.12.6
 cfscrape == 2.0.8
 configobj == 5.0.6
 feedparser == 5.2.1