Add write perms

.github/workflows/update-authors.yml

@@ -8,6 +8,8 @@ on:
 jobs:
   update-authors:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
 
     steps:
       - name: Checkout repository
@@ -27,6 +29,7 @@ jobs:
       - name: Commit and push changes
         uses: EndBug/add-and-commit@v9.1.4
         with:
+          push: true
           add: "AUTHORS"
           default_author: github_actions
           message: "Update AUTHORS file automatically"