root: switch from drf-yasg to drf_yasg2 and up rest_framework

passbook/admin/api/overview.py

@@ -1,7 +1,7 @@
 """passbook administration overview"""
 from django.core.cache import cache
 from django.http import response
-from drf_yasg.utils import swagger_auto_schema
+from drf_yasg2.utils import swagger_auto_schema
 from rest_framework.fields import SerializerMethodField
 from rest_framework.permissions import IsAdminUser
 from rest_framework.request import Request

passbook/admin/api/overview_metrics.py

@@ -9,7 +9,7 @@ from django.db.models.fields import DurationField
 from django.db.models.functions import ExtractHour
 from django.http import response
 from django.utils.timezone import now
-from drf_yasg.utils import swagger_auto_schema
+from drf_yasg2.utils import swagger_auto_schema
 from rest_framework.fields import SerializerMethodField
 from rest_framework.permissions import IsAdminUser
 from rest_framework.request import Request

passbook/admin/api/tasks.py

@@ -4,7 +4,7 @@ from importlib import import_module
 from django.contrib import messages
 from django.http.response import Http404
 from django.utils.translation import gettext_lazy as _
-from drf_yasg.utils import swagger_auto_schema
+from drf_yasg2.utils import swagger_auto_schema
 from rest_framework.decorators import action
 from rest_framework.fields import CharField, DateTimeField, IntegerField, ListField
 from rest_framework.permissions import IsAdminUser