Add explicit workflow permissions for security

Co-authored-by: MishkatIT <125080003+MishkatIT@users.noreply.github.com>

Author: Copilot

.github/workflows/update-stats.yml

@@ -9,6 +9,8 @@ on:
 jobs:
   update-stats:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write  # Required to push changes to repository
 
     steps:
       - name: Checkout repository