[chores] Reordered dependencies

requirements-test.txt

@@ -1,4 +1,5 @@
 coveralls
+redis>=3.4.1,<4.0.0
 channels_redis~=3.1
 django_redis~=4.12
 openwisp-utils[qa]~=0.6.0

requirements.txt

@@ -1,18 +1,17 @@
 django>=2.2,<3.1
 django-model-utils>=4.0
-netjsonconfig>=0.8.0,<0.9.0
 django-sortedm2m>=3.0.0,<3.1.0
 django-reversion>=3.0.5,<3.1.0
 django-x509~=0.8.0
 django-taggit~=1.3.0
+django-loci>=0.3.1,<0.4.0
+django-flat-json-widget~=0.1
 openwisp-utils~=0.6.0
 openwisp-users~=0.4.0
-django-loci>=0.3.1,<0.4.0
+openwisp-notifications~=0.1
 djangorestframework-gis>=0.12.0,<0.16.0
+netjsonconfig>=0.8.0,<0.9.0
 paramiko>=2.7.1,<2.8.0
 scp>=0.13.0,<0.14.0
 celery>=4.4.3,<4.5.0
-redis>=3.4.1,<4.0.0
 swapper~=1.1.0
-django-flat-json-widget~=0.1
-openwisp-notifications~=0.1