Update contributors.yml

Author: ksg97031

.github/workflows/contributors.yml

@@ -18,4 +18,7 @@ jobs:
       - uses: bubkoo/contributors-list@v1
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          round: true
+          round: true
+    permissions:
+      contents: read
+      pull-requests: write