ci: add stale-exempt label to exempt issues from automation (#41031)

.github/workflows/stale.yml

@@ -27,7 +27,7 @@ jobs:
             This issue has been automatically marked as stale. **If this issue is still affecting you, please leave any comment** (for example, "bump"), and we'll keep it open. If you have any new additional information—in particular, if this is still reproducible in the [latest version of Electron](https://www.electronjs.org/releases/stable) or in the [beta](https://www.electronjs.org/releases/beta)—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 on a [supported version of Electron](https://www.electronjs.org/docs/latest/tutorial/electron-timelines#timeline) please open a new issue and include instructions for reproducing the issue.
-          exempt-issue-labels: "discussion,security \U0001F512,enhancement :sparkles:,status/confirmed"
+          exempt-issue-labels: "discussion,security \U0001F512,enhancement :sparkles:,status/confirmed,stale-exempt"
           only-pr-labels: not-a-real-label
   pending-repro:
     runs-on: ubuntu-latest