Use primary DB when migrating task tags

arkindex/ponos/migrations/0035_alter_task_tags.py

@@ -5,7 +5,7 @@ import arkindex.project.fields
 
 def comma_sep_char_to_list(apps, schema_editor):
     Task = apps.get_model("ponos", "Task")
-    tasks_attrs = Task.objects.values_list("id", "old_tags")
+    tasks_attrs = Task.objects.using('default').values_list("id", "old_tags")
     Task.objects.bulk_update(
         (
             Task(
@@ -19,7 +19,7 @@ def comma_sep_char_to_list(apps, schema_editor):
 
 def revert_comma_sep_char_to_list(apps, schema_editor):
     Task = apps.get_model("ponos", "Task")
-    tasks_attrs = Task.objects.values_list("id", "tags")
+    tasks_attrs = Task.objects.using('default').values_list("id", "tags")
     Task.objects.bulk_update(
         (
             Task(