Require the swh.journal pytest plugin explicitly

conftest.py

-# Copyright (C) 2020  The Software Heritage developers
+# Copyright (C) 2020-2025  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
@@ -13,6 +13,7 @@ settings.register_profile("slow", max_examples=20, deadline=5000)
 
 
 pytest_plugins = [
+    "swh.journal.pytest_plugin",
     "swh.scheduler.pytest_plugin",
     "swh.storage.pytest_plugin",
 ]

requirements-test.txt

@@ -3,6 +3,7 @@ pytest-mock
 pytest-postgresql > 5
 hypothesis >= 3.11.0
 swh.core[testing] >= 3.6.3
+swh.journal[pytest] >= 2.0.0
 swh.storage[testing] >= 2.0.0
 
 celery-types