arrow

ARROW-12619: [Python] pyarrow sdist should not require git

There is a fallback_version configuration option for setuptools_scm which we don't use: https://github.com/pypa/setuptools_scm#configuration-parameters

Although this setting seems to have issues according to https://github.com/pypa/setuptools_scm/issues/549
We already have a workaround in setup.py for the functionality of the fallback_version option, but it is disabled for the case of sdist: https://github.com/apache/arrow/blob/master/python/setup.py#L529

Closes #10342 from kszucs/ARROW-12619

Authored-by: Krisztián Szűcs <szucs.krisztian@gmail.com>
Signed-off-by: Krisztián Szűcs <szucs.krisztian@gmail.com>