Merge branch 'bump-django-cors-headers' into 'master'

Bump Python requirement django-cors-headers to 3.6.0

See merge request !1135

requirements.txt

@@ -5,7 +5,7 @@ git+https://gitlab.com/teklia/apistar.git#egg=apistar
 arkindex-common==0.2.0
 git+https://gitlab.com/arkindex/common.git#egg=arkindex-common
 django-admin-hstore-widget==1.1.0
-django-cors-headers==3.5.0
+django-cors-headers==3.6.0
 django-enumfields==2.0.0
 django-redis==4.12.1
 django-rq==2.4.0