fix(CICD): Added write permissions to the readme auto-updater workflow

Prevents the error 'remote: Permission to USERNAME/SecLists.git denied to github-actions[bot].' when the action is run automatically from a seclists fork that has the default github-actions security settings

.github/workflows/readme-updater.yml

@@ -10,6 +10,8 @@ jobs:
 
   update-readme:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
 
       - name: Clone repository