Added stale and close messages to actions/stale GHA (#408) (#409)

Signed-off-by: Helber Belmiro <[email protected]>
Co-authored-by: Helber Belmiro <[email protected]>

Author: github-actions[bot]

.github/workflows/stale_issues.yml

@@ -1,7 +1,7 @@
 name: Close stale issues and PRs
 on:
   schedule:
-    - cron: '0 12 * * *'
+    - cron: "0 12 * * *"
 
 permissions:
   issues: write
@@ -10,7 +10,15 @@ permissions:
 jobs:
   stale:
     runs-on: ubuntu-latest
+    env:
+      Maintainers: "@ricardozanini @hbelmiro"
+      Stale_Message: "$Maintainers This is being labeled as Stale."
+      Close_Message: "$Maintainers This is being closed due to inactivity."
     steps:
       - uses: actions/[email protected]
         with:
-          exempt-issue-labels: 'pinned'
+          exempt-issue-labels: "pinned"
+          stale-issue-message: "$Stale_Message"
+          stale-pr-message: "$Stale_Message"
+          close-issue-message: "$Close_Message"
+          close-pr-message: "$Close_Message"