[github] Extend stale timeout and exempt certain labels for the autoc…

…lose bot (kaldi-asr#4132)

Current setup of the bot is overly aggressive.

I need more time to review the stale issues.

.github/stale.yml

@@ -1,17 +1,28 @@
-# Number of days of inactivity before an issue becomes stale
+# Number of days of inactivity before an issue becomes stale.
 daysUntilStale: 60
-# Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
-# Issues with these labels will never be considered stale
+# Number of days of inactivity before a stale issue is closed.
+daysUntilClose: 30
+# Issues with these labels will never be considered stale.
 exemptLabels:
-  - pinned
-  - important
-# Label to use when marking an issue as stale
+  - discussion
+  - enhancement
+  - help-wanted
+  - in progress
+  - low-priority
+  - newbie
+  - stale-exclude
+  - stopped development
+# Label to use when marking an issue as stale.
 staleLabel: stale
-# Comment to post when marking an issue as stale. Set to `false` to disable
+# Comment to post when marking an issue as stale.
 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.
-# Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: false
+  This issue has been automatically marked as stale by a bot solely because it
+  has not had recent activity. Please add any comment (simply 'ping' is enough)
+  to prevent the issue from being closed for 60 more days if you believe it
+  should be kept open.
+# Comment to post when closing a stale issue.
+closeComment: >
+  This issue has been automatically closed by a bot strictly because of
+  inactivity. This does not mean that we think that this issue is not
+  important! If you believe it has been closed hastily, add a comment
+  to the issue and mention @kkm000, and I'll gladly reopen it.