chore(base): correct typo

ref: #804

app/itam/tests/unit/device_software/test_unit_device_software_model.py

@@ -1,3 +1,5 @@
+import pytest
+
 from django.test import TestCase
 
 from access.models.tenant import Tenant as Organization

app/itam/tests/unit/endpoint_software_installs/test_unit_software_installs_viewset.py

@@ -1,3 +1,5 @@
+import pytest
+
 from django.test import Client, TestCase
 
 from rest_framework.reverse import reverse