Cache clean up might fail on Windows

apache_beam\runners\interactive\recording_manager_test.py:75: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
apache_beam\runners\interactive\interactive_environment.py:118: in new_env
    _interactive_beam_env.cleanup()
apache_beam\runners\interactive\interactive_environment.py:272: in cleanup
    cache_manager.cleanup()
apache_beam\runners\interactive\caching\streaming_cache.py:391: in cleanup
    shutil.rmtree(self._cache_dir)
c:\hostedtoolcache\windows\python\3.6.8\x64\lib\shutil.py:500: in rmtree
    return _rmtree_unsafe(path, onerror)
c:\hostedtoolcache\windows\python\3.6.8\x64\lib\shutil.py:390: in _rmtree_unsafe
    _rmtree_unsafe(fullname, onerror)
c:\hostedtoolcache\windows\python\3.6.8\x64\lib\shutil.py:395: in _rmtree_unsafe
    onerror(os.unlink, fullname, sys.exc_info())
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

...

>                   os.unlink(fullname)
E                   PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'D:\\a\\beam\\beam\\sdks\\python\\target\\.tox\\py36-win\\tmp\\it-4m1c1oje2145793178144\\full\\fb91a47796-2145832985040-2145832986608-2145793178144'