mrjobs doesn't work with Python 3.13

[JayBazuzi]

To reproduce

1. In Python 3.13, run ./run_tests

Result

ImportError while importing test module '/Users/runner/work/ApprovalTests.Python/ApprovalTests.Python/tests/test_options.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/importlib/__init__.py:88: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_options.py:11: in <module>
    from approvaltests.integrations.mrjob import mrjob_approvals
approvaltests/integrations/mrjob/mrjob_approvals.py:6: in <module>
    from mrjob.job import MRJob
.tox/py/lib/python3.13/site-packages/mrjob/job.py:36: in <module>
    from mrjob.conf import combine_dicts
.tox/py/lib/python3.13/site-packages/mrjob/conf.py:34: in <module>
    from mrjob.util import expand_path
.tox/py/lib/python3.13/site-packages/mrjob/util.py:23: in <module>
    import pipes
E   ModuleNotFoundError: No module named 'pipes'

Note

Pipes was removed in Python 3.13 (deprecated in 3.12)