fix(test-data): signup_closing is before script has run

The ActivityFactory made the signup_closing field be a date +/-100 days from when the script was run. This made some acitivities not show up in the activities overview of the website, since the signup had already closed. This is now fixed by setting signup_closed to a date 1-10 days in the future.

members/management/commands/create_dummy_data.py

@@ -16,6 +16,8 @@
 from django.utils import timezone
 from collections import namedtuple
 
+from members.tests.factories.factory_helpers import TIMEZONE
+
 # We're creating a union for each region.
 # A named tuple with a name for the Union, and a name for the region to use in its address.
 Union_to_create = namedtuple("Union_to_create", "union_name region_name")
@@ -92,6 +94,9 @@ def _create_activity(department):
         max_participants=Faker("random_int", min=10, max=100),
         price_in_dkk=Faker("random_int", min=500, max=1000),
         address=AddressFactory(region=department.address.region),
+        signup_closing=Faker(
+            "date_time_between", tzinfo=TIMEZONE, start_date="+1d", end_date="+10d"
+        ),
     )
     # Creates 2 children and assigns them to the activity
     ActivityParticipantFactory(person=_create_child(), activity=activity)