fix: write contents for auto-release job (#6669)

Author: bshaffer

.github/workflows/auto-release.yaml

@@ -17,6 +17,8 @@ on:
   schedule:
     - cron: '20 1 * * 1'
   workflow_dispatch:
+permissions:
+  contents: write
 jobs:
   build:
     runs-on: ubuntu-24.04