fix label checker

[AyodeAwe]

PR updates the label checker plugin to correctly skip Forward Merger PRs.

[AyodeAwe]

@ajschmidt8, regarding the branch_checker and recently_updated plugins, it appears the goal is to exclude release PRs.

Could we do this (in a separate PR) by omitting PRs whose titles begin with [RELEASE], rather than by the authorship of GPUTester, as is currently done?

The logic would also be updated to omit PRs authored by rapids-bot as well.

[ajschmidt8]

Does the GPUtester open up any other PRs? If not, this PR looks good to me.

If so, we'll probably want to amend the logic to exclude PRs from both GPUtester and rapids-bot.

[ajschmidt8]

After reading your comment, we should probably exclude both GPUtester and rapids-bot PRs

[ajschmidt8]

@ajschmidt8, regarding the branch_checker and recently_updated plugins, it appears the goal is to exclude release PRs.

Could we do this (in a separate PR) by omitting PRs whose titles begin with [RELEASE], rather than by the authorship of GPUTester, as is currently done?

The logic would also be updated to omit PRs authored by rapids-bot as well.

Looking at the author is safer than looking at the PR title. Otherwise anyone could skip the checks, which is not what we want.

[AyodeAwe]

@ajschmidt8 GPUTester does not open any PRs. It used to though (e.g here, in 2023). These days, the release PRs that come out of code freeze come authored by Ray (e.g here)

I guess my question would be, seeing that release PRs are no longer authored by GPUTester but Ray, even if we include an exclusion of PRs from GPUTester, release PRs (which seems to be what we have intended to exclude in the past) will NOT be excluded from checks.

[ajschmidt8]

@ajschmidt8 GPUTester does not open any PRs. It used to though (e.g here, in 2023). These days, the release PRs that come out of code freeze come authored by Ray (e.g here)

I guess my question would be, seeing that release PRs are no longer authored by GPUTester but Ray, even if we include an exclusion of PRs from GPUTester, release PRs (which seems to be what we have intended to exclude in the past) will NOT be excluded from checks.

In that case, these changes are probably fine. I wasn't aware that Ray started opening release PRs now.

I don't think there's any good way to exclude release PRs so we can just punt on that problem for now.