[Python][CI] wheel-windows-cp36-amd64 nightly build failure

[asfimport]

See https://github.com/ursacomputing/crossbow/runs/3788550781?check_suite_focus=true#step:8:308

For some reason, Orc is disabled in the Python 3.6 Windows wheel build, but the test doesn't detect it:

__________________________ test_file_format_pickling __________________________

    def test_file_format_pickling():
        formats = [
            ds.IpcFileFormat(),
            ds.CsvFileFormat(),
            ds.CsvFileFormat(pa.csv.ParseOptions(delimiter='\t',
                                                 ignore_empty_lines=True)),
            ds.CsvFileFormat(read_options=pa.csv.ReadOptions(
                skip_rows=3, column_names=['foo'])),
            ds.CsvFileFormat(read_options=pa.csv.ReadOptions(
                skip_rows=3, block_size=2**20)),
            ds.ParquetFileFormat(),
            ds.ParquetFileFormat(dictionary_columns={'a'}),
            ds.ParquetFileFormat(use_buffered_stream=True),
            ds.ParquetFileFormat(
                use_buffered_stream=True,
                buffer_size=4096,
            )
        ]
        try:
>           formats.append(ds.OrcFileFormat())
E           AttributeError: module 'pyarrow.dataset' has no attribute 'OrcFileFormat'

Reporter: Antoine Pitrou / @pitrou
Assignee: Joris Van den Bossche / @jorisvandenbossche

PRs and other links:

• GitHub Pull Request #11336

_{Note: This issue was originally created as ARROW-14214. Please see the migration documentation for further details.}

[asfimport]

Joris Van den Bossche / @jorisvandenbossche:
Ah, I assume this is because the build is using Python 3.6, which doesn't yet use the module __getattr__

[asfimport]

Antoine Pitrou / @pitrou:
Issue resolved by pull request 11336
#11336