GH-36023: [CI][Ruby][Release] Suppress meaningless progress log from verify-rc-ruby

[kou]

Rationale for this change

GLib/Ruby tests show progress log by default:

https://github.com/ursacomputing/crossbow/actions/runs/5230026234/jobs/9443353956#step:6:10172

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It's useful on local run but meaningless on CI.

What changes are included in this PR?

Pass through GITHUB_ACTIONS environment variable because the testing frame that is used by GLib/Ruby tests suppress the progress log with GITHUB_ACTIONS=true automatically.

Are these changes tested?

Yes.

Are there any user-facing changes?

No.

• Closes: [CI][Ruby][Release] Suppress meaningless progress log from verify-rc-ruby #36023

[github-actions]

⚠️ GitHub issue #36023 has been automatically assigned in GitHub to PR creator.

[kou]

@github-actions crossbow submit verify-rc-source-ruby-linux-*

[github-actions]

Revision: b28ca7c

Submitted crossbow builds: ursacomputing/crossbow @ actions-43ac44d8ee

Task	Status
verify-rc-source-ruby-linux-almalinux-8-amd64
verify-rc-source-ruby-linux-conda-latest-amd64
verify-rc-source-ruby-linux-ubuntu-20.04-amd64
verify-rc-source-ruby-linux-ubuntu-22.04-amd64

[assignUser]

Nice!

[ursabot]

Benchmark runs are scheduled for baseline = c13275e and contender = 98559fe. 98559fe 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 ⬇️1.0% ⬆️0.21%] test-mac-arm
[Finished ⬇️0.33% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.39% ⬆️0.09%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] 98559fe0 ec2-t3-xlarge-us-east-2
[Finished] 98559fe0 test-mac-arm
[Finished] 98559fe0 ursa-i9-9960x
[Finished] 98559fe0 ursa-thinkcentre-m75q
[Finished] c13275e1 ec2-t3-xlarge-us-east-2
[Finished] c13275e1 test-mac-arm
[Finished] c13275e1 ursa-i9-9960x
[Finished] c13275e1 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