Potential fix for code scanning alert no. 3: Workflow does not contain permissions (#159)

* Potential fix for code scanning alert no. 3: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* Update stale-bot.yml

---------

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: thpierce

.github/workflows/stale-bot.yml

@@ -19,6 +19,10 @@ on:
 
 jobs:
   stale-close:
+    permissions:
+      contents: read
+      issues: write
+      pull-requests: write
     runs-on: ubuntu-latest
     steps:
       - name: Mark the issues/pr