Hi, could you fix the warning this PR generates? (logging.warn ->
logging.warning)
```
test_display_data
(apache_beam.options.pipeline_options_test.PipelineOptionsTest) ...
/home/jenkins/jenkins-slave/workspace/beam_PostCommit_Python_Verify/src/sdks/python/apache_beam/options/pipeline_options.py:228:
DeprecationWarning: The 'warn' function is deprecated, use 'warning' instead
logging.warn("Discarding unparseable args: %s", unknown_args)
ok
```
https://builds.apache.org/job/beam_PostCommit_Python_Verify/6181/consoleText
[ Full content available at: https://github.com/apache/beam/pull/6557 ]
This message was relayed via gitbox.apache.org for devnull@infra.apache.org
