ci: fix old message

Author: EndBug

.github/workflows/stale.yml

@@ -11,10 +11,10 @@ jobs:
       - uses: actions/stale@v3
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
-          stale-issue-message: 'This issue is being marked as "stale" because it has been open 30 days with no activity. Remove the "stale" label or comment, otherwise this will be closed in 5 days.'
+          stale-issue-message: 'This issue is being marked as "stale" because it has been open 20 days with no activity. Remove the "stale" label or comment, otherwise this will be closed in 5 days.'
           stale-issue-label: stale
           exempt-issue-labels: pinned
-          stale-pr-message: 'This PR is being marked as "stale" because it has been open 30 days with no activity. Remove the "stale" label or comment, otherwise this will be closed in 5 days.'
+          stale-pr-message: 'This PR is being marked as "stale" because it has been open 20 days with no activity. Remove the "stale" label or comment, otherwise this will be closed in 5 days.'
           stale-pr-label: stale
           exempt-pr-labels: pinned
           days-before-stale: 20