chore: update stale bot duration to 90D (#4628)

Signed-off-by: Mike Nguyen <[email protected]>
Co-authored-by: Mark Fussell <[email protected]>
Co-authored-by: Nelson Parente <[email protected]>

Author: 3 people

.github/workflows/stale-pr-monitor.yml

@@ -18,4 +18,4 @@ jobs:
         stale-pr-message: 'Stale PR, paging all reviewers'
         stale-pr-label: 'stale'
         exempt-pr-labels: 'question,"help wanted",do-not-merge,waiting-on-code-pr'
-        days-before-stale: 30
+        days-before-stale: 90