Fixes #14242: Enable export templates for contact assignments

Author: jeremystretch

netbox/tenancy/models/contacts.py

@@ -5,7 +5,7 @@
 from django.utils.translation import gettext_lazy as _
 
 from netbox.models import ChangeLoggedModel, NestedGroupModel, OrganizationalModel, PrimaryModel
-from netbox.models.features import TagsMixin
+from netbox.models.features import ExportTemplatesMixin, TagsMixin
 from tenancy.choices import *
 
 __all__ = (
@@ -109,7 +109,7 @@ def get_absolute_url(self):
         return reverse('tenancy:contact', args=[self.pk])
 
 
-class ContactAssignment(ChangeLoggedModel, TagsMixin):
+class ContactAssignment(ChangeLoggedModel, ExportTemplatesMixin, TagsMixin):
     content_type = models.ForeignKey(
         to=ContentType,
         on_delete=models.CASCADE