[pyupgrade] `tests/` (#10347)

changelog.d/10347.misc

tests/config/test_load.py

tests/handlers/test_profile.py

tests/http/federation/test_matrix_federation_agent.py

tests/http/test_fedclient.py

tests/replication/_base.py

tests/replication/test_multi_media_repo.py

tests/replication/test_sharded_event_persister.py

tests/rest/admin/test_admin.py

tests/rest/admin/test_room.py

tests/rest/client/v1/test_rooms.py

tests/rest/client/v2_alpha/test_relations.py

tests/rest/client/v2_alpha/test_report_event.py

tests/rest/media/v1/test_media_storage.py

tests/storage/test_directory.py

tests/storage/test_profile.py

tests/storage/test_purge.py

tests/storage/test_room.py

tests/test_types.py

tests/unittest.py