Add type annotations to empty_last_conversation_path fixture

Author: uriyyo

tests/test_cli.py

@@ -58,7 +58,7 @@ def _create_test_module(**namespace: Any) -> None:
 
 
 @pytest.fixture
-def empty_last_conversation_path(tmp_path, mocker):
+def empty_last_conversation_path(tmp_path: Path, mocker: MockerFixture) -> Path:
     path = tmp_path / LAST_CONVERSATION_FILENAME
     mocker.patch('pydantic_ai._cli.PYDANTIC_AI_HOME', tmp_path)