update stale bot configuration to close staled issues in 21 days

.github/stale.yml

@@ -1,21 +1,21 @@
-# Configuration for probot-stale - https://github.com/probot/stale
+# Configuration for Github probot-stale - https://github.com/probot/stale
 
 # Number of days of inactivity before an issue becomes stale
-daysUntilStale: 180
+daysUntilStale: 90
 # Number of days of inactivity before a stale issue is closed
-daysUntilClose: 90
+daysUntilClose: 21
 # Issues with these labels will never be considered stale
 exemptLabels:
   - 'Type: Feature Request'
 # Label to use when marking an issue as stale
-staleLabel: stale
+staleLabel: Stale
 # Comment to post when marking an issue as stale. Set to `false` to disable
 markComment: >
-  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.
+  Hi 👋 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 ❤️.
 # Comment to post when closing a stale issue. Set to `false` to disable
 closeComment: >
-  This issue has been automatically closed because it had not recent activity during the stale period.
+  Hi again 👋 we would like to inform you that this issue has been automatically `closed` 🔒 because it had not recent activity during the `stale` period.
+  We really really appreciate your contributions, and looking forward for more in the future 🎈.
 # Limit to only `issues` or `pulls`
 only: issues