MINOR: [Archery] Add collaborators to list of roles with access to trigger bot tasks

[raulcd]

I've been added as triager but now if I try to trigger crossbow tasks they fail with permissions issues:
#14715 (comment)

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The Archery job run can be found at: https://github.com/apache/arrow/actions/runs/3539688563

This should fix the issue

[pitrou]

I didn't know about the "collaborator" role. This looks good to me. @kou What do you think?

[raulcd]

@pitrou for reference: #14719

[jorisvandenbossche]

Since we already allow contributor, which is "lower in rank" as collaborator, this seems logical to do

[assignUser]

Thanks!

[kou]

+1

[ursabot]

Benchmark runs are scheduled for baseline = 25ca62a and contender = c33bdab. c33bdab 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
[Failed ⬇️0.47% ⬆️0.03%] test-mac-arm
[Finished ⬇️0.54% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.1% ⬆️0.07%] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] c33bdabb ec2-t3-xlarge-us-east-2
[Finished] c33bdabb test-mac-arm
[Finished] c33bdabb ursa-i9-9960x
[Finished] c33bdabb ursa-thinkcentre-m75q
[Finished] 25ca62ae ec2-t3-xlarge-us-east-2
[Failed] 25ca62ae test-mac-arm
[Finished] 25ca62ae ursa-i9-9960x
[Finished] 25ca62ae 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

[ursabot]

['Python', 'R'] benchmarks have high level of regressions.
ursa-i9-9960x