Merge branch 'bump-idna' into 'master'

Bump Python requirement idna to 2.10

See merge request !979

requirements.txt

@@ -16,7 +16,7 @@ django-redis==4.12.1
 djangorestframework==3.11.1
 elasticsearch-dsl>=6.0.0,<7.0.0
 gitpython==3.0.8
-idna==2.6
+idna==2.10
 jdcal==1.3
 olefile==0.44
 python-gitlab==1.7.0