github: update stale message

.github/stale.yml

@@ -7,13 +7,18 @@ pulls:
   exemptLabels:
     - S-WIP
   markComment: >
-    This pull request has been automatically marked as stale because it has not
-    had activity in the last 60 days. It will be automatically closed if no
-    further activity occurs in the next 14 days. If you are still waiting for a
-    review or response from one of our developers you can leave a comment to
-    remove the stale label. If you know the username of the maintainer of the
-    aport you could try to mention the username in the comment. You can also
-    join our IRC channels on freenode and see if you can find an available
-    developer. Thank you for your contributions.
+    Sorry to bother you, but we noticed there has't been any activity on this
+    pull request for 60 days. Because we have to deal with a lot of pull
+    requests, we use this stupid bot to automatically mark it as stale.
+
+    If you still want this PR to be merged, you can do the following:
+
+    1. Rebase the PR on the latest master.
+    2. Apply any feedback you might have received.
+    3. Make sure the package builds without issues in CI.
+    4. If the PR is waiting on us, feel free to ping one of us here or on IRC.
+
+    If you are no longer interested in this PR, you don't have to do anything.
+    The PR will automatically be closed in 14 days.
   closeComment: >
     This pull request has been automatically closed.