(Feel free to update this bug's summary to be more specific.)
Component Readiness has found a potential regression in the following test:

install should succeed: infrastructure

Significant regression detected.
Fishers Exact probability of a regression: 100.00%.
Test pass rate dropped from 100.00% to 90.00%.

Sample (being evaluated) Release: 4.21
Start Time: 2025-12-05T00:00:00Z
End Time: 2025-12-12T00:00:00Z
Success Rate: 90.00%
Successes: 36
Failures: 4
Flakes: 0
Base (historical) Release: 4.20
Start Time: 2025-09-21T00:00:00Z
End Time: 2025-10-21T23:59:59Z
Success Rate: 100.00%
Successes: 149
Failures: 0
Flakes: 0

View the test details report for additional context.

The issue happened on aws-5 cluster profile recently, but the issue already disappeared in the latest job run, file this issue for tracking.