ci: stale only issues [skip ci]

.github/workflows/stale.yml

@@ -12,10 +12,12 @@ jobs:
     steps:
       - uses: actions/stale
         with:
-          days-before-stale: 90
+          days-before-stale: 180
           days-before-close: 30
           stale-issue-label: stale
           stale-issue-message: >
             This issue has been automatically marked as stale. **If this issue is still affecting you, please leave any comment**, and we'll keep it open. If you have any new additional information, please include it with your comment!
           close-issue-message: >
             This issue has been closed due to inactivity, and will not be monitored. If this is a bug and you can reproduce this issue, please open a new issue.
+          exempt-issue-labels: discussion
+          only-pr-labels: not-a-real-label