Fixed a dependency issue

api/requirements/base.txt

@@ -49,7 +49,7 @@ python-magic==0.4.15
 # XXX: until https://github.com/django/channels/issues/1240 is fixed
 channels==2.1.6
 channels_redis>=2.3,<2.4
-daphne>=2.3,<2.4
+daphne>=2.2,<2.3
 
 cryptography>=2,<3
 # requests-http-signature==0.0.3