Remove pinning of twisted to update to latest version

19fd429e · Georg Krause · d2806588 · 19fd429e
Commit 19fd429e authored Jul 31, 2021 by Georg Krause
--- a/api/requirements/base.txt
+++ b/api/requirements/base.txt
@@ -71,5 +71,4 @@ feedparser~=6.0.0
 watchdog~=2.1.2

 ## Pin third party dependency to avoid issue with latest version
-twisted==20.3.0
 asgiref==3.3.4