Add poetry fixture

Author: Cypher1

tests/console/commands/test_update.py

@@ -85,7 +85,9 @@ def test_update_prints_operations(
 
 @pytest.fixture()
 def test_update_sync_option_is_passed_to_the_installer(
-    command_tester_factory: CommandTesterFactory, mocker: MockerFixture
+    poetry_with_outdated_lockfile: Poetry,
+    command_tester_factory: CommandTesterFactory,
+    mocker: MockerFixture,
 ) -> None:
     """
     The --sync option is passed properly to the installer from update.