ARROW-17725: [CI][Python] Fix test collection in case of Arrow built without parquet

[raulcd]

As seen on the JIRA ticket our minimal builds were failing due to failures on test collection. The issue happened when Arrow was built without PARQUET.

[raulcd]

@github-actions crossbow submit example-python-minimal-build-*

[raulcd]

Thanks @AlenkaF for the help understanding the issue!

[github-actions]

https://issues.apache.org/jira/browse/ARROW-17725

[github-actions]

Revision: 0ad6870

Submitted crossbow builds: ursacomputing/crossbow @ actions-8ba4398f58

Task	Status
example-python-minimal-build-fedora-conda
example-python-minimal-build-ubuntu-venv

[pitrou]

Thanks, I also noticed this.

[ursabot]

Benchmark runs are scheduled for baseline = 03cf0dd and contender = bc8a608. bc8a608 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Finished ⬇️0.24% ⬆️0.0%] test-mac-arm
[Failed ⬇️0.56% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.32% ⬆️0.07%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] bc8a6082 ec2-t3-xlarge-us-east-2
[Finished] bc8a6082 test-mac-arm
[Failed] bc8a6082 ursa-i9-9960x
[Finished] bc8a6082 ursa-thinkcentre-m75q
[Finished] 03cf0dd3 ec2-t3-xlarge-us-east-2
[Finished] 03cf0dd3 test-mac-arm
[Failed] 03cf0dd3 ursa-i9-9960x
[Finished] 03cf0dd3 ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java