chore(github): update deprecated property in triage issues with ai (#69323)
## Why?
It's possible that the `maxAutomaticToolTrips` line is affecting
`generateText()` from having a `results.roundtrips.length > 1` (how to
identify when a Tool Call is made), which is how the Slack message gets
sent.
- `maxAutomaticToolTrips` → `maxToolRoundtrips`
-
https://github.com/vercel/next.js/actions/runs/10525787598/job/29271187944