GH-14949: [CI][Release] Output script's stdout on failure

[kou]

This doesn't solve GH-14949 (CI failure) because it's a problem of MojoHaus Versions Maven Plugin: mojohaus/versions#848

This adds more debug information on test failure.

• Closes: [CI][Release] Source Release and Merge Script jobs are currently failing on GHA #14949

[github-actions]

• Closes: [CI][Release] Source Release and Merge Script jobs are currently failing on GHA #14949

[github-actions]

⚠️ GitHub issue #14949 has been automatically assigned in GitHub to PR creator.

[kou]

+1

[ursabot]

Benchmark runs are scheduled for baseline = 2708c08 and contender = 676c804. 676c804 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 ⬇️0.43% ⬆️0.03%] test-mac-arm
[Finished ⬇️0.27% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.1% ⬆️0.1%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] 676c804d ec2-t3-xlarge-us-east-2
[Finished] 676c804d test-mac-arm
[Finished] 676c804d ursa-i9-9960x
[Finished] 676c804d ursa-thinkcentre-m75q
[Finished] 2708c088 ec2-t3-xlarge-us-east-2
[Finished] 2708c088 test-mac-arm
[Finished] 2708c088 ursa-i9-9960x
[Finished] 2708c088 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