chore(pstack): bump to 0.15.22 - #605

Bugbot Analysis Progress (3m 30s elapsed)

✅ Gathered PR context (1s)
✅ Completed bug detection (3m 29s)
✅ Posted analysis results (0s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: b102701f-0b65-4d27-923a-a61d3ab6ea4d