fix: contents permissions -> write

.github/workflows/dead-domains.yml

@@ -6,7 +6,7 @@ on:
     - cron: "0 9 * * *"
 
 permissions:
-  contents: read
+  contents: write
   pull-requests: write
 
 jobs:
@@ -42,6 +42,7 @@ jobs:
           title: "Automated dead domains cleanup"
           body: "This is an auto-generated PR with fixes for dead domains."
           branch: "cleanup/dead-domains"
+          base: main
 
       - name: Check outputs
         if: ${{ steps.cpr.outputs.pull-request-number }}