chore(requirements): update idna to v2.6

mboersma · mboersma · commit 31f709eb7cd3 · 2017-08-17T14:10:20.000-06:00
See https://github.com/kjd/idna/blob/master/HISTORY.rst#26-2017-08-08
diff --git a/rootfs/requirements.txt b/rootfs/requirements.txt
@@ -7,7 +7,7 @@ django-guardian==1.4.9
 djangorestframework==3.6.3
 docker-py==1.10.6
 gunicorn==19.7.1
-idna==2.5
+idna==2.6
 jmespath==0.9.3
 jsonfield==2.0.2
 jsonschema==2.6.0
