[JIT] Update JIT triage project board workflow (#45613)
Summary:
This commit updates `.github/workflows/jit_triage.yml` to use the new `oncall: jit` tag instead of the old `jit` tag.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45613
Reviewed By: izdeby
Differential Revision: D24032388
Pulled By: SplitInfinity
fbshipit-source-id: 6631a596b2f80bdb322caa74adaf0dc2cb146350
