Update stale.yaml (#1142)

Author: mfeurer

.github/workflows/stale.yaml

@@ -20,5 +20,5 @@ jobs:
           stale-issue-label: 'stale'
           # Only issues with ANY of these labels are checked.
           # Separate multiple labels with commas (eg. "incomplete,waiting-feedback").
-          any-of-issue-labels: 'Answered,Feedback-Required,invalid,wontfix'
+          any-of-labels: 'Answered,Feedback-Required,invalid,wontfix'
           exempt-all-milestones: true