deps: update actions/stale action to v8 (#210)

* deps: update actions/stale action to v8

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: jo <ljonas@riseup.net>

Author: renovate[bot]

.github/workflows/bot_stale.yml

@@ -1,19 +1,24 @@
 name: "Close stale issues"
+
 on:
   schedule:
     - cron: "30 12 * * *"
+
+permissions:
+  issues: write
+  pull-requests: write
+
 jobs:
   stale:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/stale@v1
+      - uses: actions/stale@v8
         with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
           stale-issue-message: "This issue has been marked as stale because it has not had recent activity. The bot will close the issue if no further action occurs."
-          exempt-issue-label: "pinned"
-          stale-issue-label: "stale"
+          exempt-issue-labels: "pinned"
+          stale-issue-labels: "stale"
           stale-pr-message: "This PR has been marked as stale because it has not had recent activity. The bot will close the PR if no further action occurs."
-          exempt-pr-label: "pinned"
-          stale-pr-label: "stale"
+          exempt-pr-labels: "pinned"
+          stale-pr-labels: "stale"
           days-before-stale: 90
           days-before-close: 30