Mention rust_team_data usage when changing it

[Urgau]

This PR adds a triagebot mention to changes done to the v1 format of rust_team_data, as it's being used by multiple projects and breaking the format results in an outage of some functionality.

See #triagebot > ✔ assign handler, error decoding response body? for the last one #2043.

Note that "triagebot is currently not setup in this repo, as it would need write access (which needs to be tightly controlled)"¹, which is fair for this repo. Fortunately posting a comment on this repo doesn't need write access so we should be fine.

cc @Kobzol @senekor (as you were also impacted)

Footnotes

1. https://github.com/rust-lang/team/blob/master/docs/labels.md#labels-are-currently-manually-applied ↩

[Kobzol]

Thanks, this is a good idea, and sorry for the breakage. Next time we should mark the field with Option, then update the projects, and remove it and then update the projects again.

[github-actions]

Dry-run check results

[WARN  sync_team] sync-team is running in dry mode, no changes will be applied.
[INFO  sync_team] synchronizing github

[jieyouxu]

Since this doesn't need write access, this looks good to me, thanks.

[jieyouxu]

Actually, could you also update https://github.com/rust-lang/team/blob/master/docs/labels.md#labels-are-currently-manually-applied to say that only limited functionality from triagebot is available because triagebot doesn't have write access to this repo? (Since technically now triagebot is setup, just that it can't support the "fancier" functionality).

[jieyouxu]

Thanks

[jieyouxu]

CI failure is unrelated, it's because

[ERROR rust_team::validate] validation error: GitHub user Osintedx changed username to iownrena

UPD: #2048 should unblock this PR once that merges.