chore: skip pinned issues

Author: yajra

.github/workflows/stale.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/stale@v5
         with:
-          exempt-issue-labels: "bug,security,enhancement"
+          exempt-issue-labels: "bug,security,enhancement,pinned"
           days-before-issue-stale: 30
           days-before-issue-close: 7
           stale-issue-label: "stale"