github: use actions/stale

This commit replaces the current stale bot which seems to be broken with
the github actions/stale one.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>

.github/stale.yml

@@ -1,16 +0,0 @@
-# Number of days of inactivity before an issue becomes stale
-daysUntilStale: 10
-# Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
-# Issues with these labels will never be considered stale
-exemptLabels:
-  - do-not-close
-# Label to use when marking an issue as stale
-staleLabel: wontfix
-# 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.
-# Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: false

.github/workflows/stale.yml

@@ -0,0 +1,35 @@
+
+name: "Mark or close stale issues and PRs"
+on:
+  schedule:
+  # Run the stalebot every day at 8pm UTC
+  - cron: "00 20 * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/stale@v3
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        days-before-stale: 15
+        days-before-close: 7
+        days-before-pr-close: 14
+        stale-issue-message: >
+          This issue has been automatically marked as stale because it has not had recent activity.
+          It will be closed in a week if no further activity occurs.
+          Thank you for your contributions.
+        stale-pr-message: >
+          This pull request has been automatically marked as stale because it has not had
+          recent activity. It will be closed in two weeks if no further activity occurs.
+          Thank you for your contributions.
+        close-issue-message: >
+          This issue has been automatically closed due to inactivity.
+          Please re-open if this still requires investigation.
+        close-pr-message: >
+          This pull request has been automatically closed due to inactivity.
+          Please re-open if these changes are still required.
+        stale-pr-label: "stale"
+        stale-issue-label: "wontfix"
+        exempt-issue-labels: "do-not-close"
+        exempt-pr-labels: "do-not-close"