update concurrency group definition

[volatilemolotov]

Adds comment body to concurrency group definition to prevent different PRs canceling other jobs.
Fixes part of: #28320

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[volatilemolotov]

R: @Abacn

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control

[Abacn]

LGTM

[Abacn]

ah it's still in draft status (and looks good for me)

[volatilemolotov]

@Abacn Yeah i left in in draft until confirmation. Its ready now.

[volatilemolotov]

@Abacn @damccorm Seems like this is causing issues of perpetually queued jobs somehow. Could be connected to some Actions outage which would explain the first queued job getting stuck but all further are considered the same group somehow. Think the issue is the body of comment :

https://github.com/apache/beam/actions/workflows/beam_PerformanceTests_BigQueryIO_Batch_Java_Json.yml?query=is%3Aqueued

and looking at the first job trigger we get to #28272 (comment)
which is a multiline comment with code embedded and that might be causing the group to be broken somehow.

Should we perhaps use comment id or something https://docs.github.com/en/webhooks/webhook-events-and-payloads#issue_comment

[Abacn]

fair - let's use comment id