Update flakiness thresholds to reduce number of flakiness::1
What does this MR do and why?
This is based on the latest data from #67 (comment 1904228602).
| # of flakiness reports | Percentile | Label |
|---|---|---|
| 1-12 | <= P90 | flakiness4 |
| 13-36 | P90 < x <= P95 | flakiness3 |
| 37-398 | P95 < x <= P99 | flakiness2 |
| 399+ | > P99 | flakiness1 |
Edited by Rémy Coutable