⬆️((pyup) upgrade dependencies for week 41

- Update isort from 5.5.4 to 5.6.3
- Update dockerflow from 2020.6.0 to 2020.10.0

setup.cfg

@@ -54,7 +54,7 @@ dev =
     flake8==3.8.4
     ipdb==0.13.4
     ipython==7.18.1
-    isort==5.5.4
+    isort==5.6.3
     msgpack==1.0.0
     mysqlclient==2.0.1
     pylint==2.6.0
@@ -67,7 +67,7 @@ ci =
     twine==3.2.0
 sandbox =
     django-configurations==2.2
-    dockerflow==2020.6.0
+    dockerflow==2020.10.0
     factory-boy==3.1.0
     gunicorn==20.0.4
     psycopg2-binary==2.8.6