Pin DRF to known working version (#595)

* Pin DRF to known working version

* Fix datetime format string typo

Author: annehaley

miqa/core/tasks.py

@@ -222,7 +222,7 @@ def perform_import(import_dict):
                         if last_decision_dict['created']:
                             valid_dt = dateparser.parse(last_decision_dict['created'])
                             if valid_dt:
-                                created = valid_dt.strftime('%Y-%m-%d %H:$M')
+                                created = valid_dt.strftime('%Y-%m-%d %H:%M')
                         if last_decision_dict['location'] and last_decision_dict['location'] != '':
                             slices = [
                                 axis.split('=')[1]

setup.py

@@ -45,7 +45,7 @@
         'django-extensions',
         'django-filter',
         'django-oauth-toolkit',
-        'djangorestframework',
+        'djangorestframework==3.13.1',  # https://github.com/axnsan12/drf-yasg/issues/810
         'django-click',
         'django-guardian',
         'drf-yasg',