Fix indent.

Author: Claude

sdks/python/apache_beam/io/gcp/tests/xlang_spannerio_it_test.py

@@ -105,7 +105,7 @@ def setUpClass(cls):
     pipeline = TestPipeline(is_integration_test=True)
     runner_name = type(pipeline.runner).__name__
     if 'DataflowRunner' in runner_name:
-       pytest.skip("Spanner emulator not compatible with dataflow runner.")
+      pytest.skip("Spanner emulator not compatible with dataflow runner.")
     argv = pipeline.get_full_options_as_args()
 
     known_args, _ = parser.parse_known_args(argv)