Update Stale bot settings (kubeflow#2095)

Signed-off-by: Andrey Velichkevich <andrey.velichkevich@gmail.com>

.github/workflows/stale.yaml

@@ -1,8 +1,8 @@
-name: Close stale issues and PRs
+name: Mark stale issues and pull requests
 
 on:
   schedule:
-    - cron: "0 1 * * *"
+    - cron: "0 */5 * * *"
 
 jobs:
   stale:
@@ -15,21 +15,24 @@ jobs:
     steps:
       - uses: actions/stale@v9
         with:
-          days-before-issue-stale: 60
-          days-before-issue-close: 30
-          days-before-pr-stale: 60
-          days-before-pr-close: 30
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          days-before-stale: 90
+          days-before-close: 20
           stale-issue-message: >
-            This issue has been automatically marked as stale because it has been open 60 days with no activity.
-            Remove stale label or comment or this will be closed in 30 days.
-            Thank you for your contributions.
+            This issue has been automatically marked as stale because it has not had
+            recent activity. It will be closed if no further activity occurs. Thank you
+            for your contributions.
           close-issue-message: >
-            This issue has been automatically closed because it has been stalled for 30 days with no activity.
-            Please comment "/reopen" to reopen it.
+            This issue has been automatically closed because it has not had recent
+            activity. Please comment "/reopen" to reopen it.
+          stale-issue-label: lifecycle/stale
+          exempt-issue-labels: lifecycle/frozen
           stale-pr-message: >
-            This pull request has been automatically marked as stale because it has been open 60 days with no activity.
-            Remove stale label or comment or this will be closed in 30 days.
-            Thank you for your contributions.
+            This pull request has been automatically marked as stale because it has not had
+            recent activity. It will be closed if no further activity occurs. Thank you
+            for your contributions.
           close-pr-message: >
-            This pull request has been automatically closed because it has been stalled for 30 days with no activity.
-            Please comment "/reopen" to reopen it.
+            This pull request has been automatically closed because it has not had recent
+            activity. Please comment "/reopen" to reopen it.
+          stale-pr-label: lifecycle/stale
+          exempt-pr-labels: lifecycle/frozen