Potential fix for code scanning alert no. 1811: Workflow does not contain permissions

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

Author: ajay-dhangar

.github/workflows/close-old-issue.yml

@@ -6,6 +6,8 @@ on:
 jobs:
   close-issues:
     runs-on: ubuntu-latest
+    permissions:
+      issues: write
 
     steps:
       - name: Checkout Repository