Update actions/stale action to v8 (#5143)

Signed-off-by: milkmaker <milkmaker@mailcow.de>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/close_old_issues_and_prs.yml

@@ -14,7 +14,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Mark/Close Stale Issues and Pull Requests 🗑️
-        uses: actions/stale@v7.0.0
+        uses: actions/stale@v8.0.0
         with:
           repo-token: ${{ secrets.STALE_ACTION_PAT }}
           days-before-stale: 60