ci(github): 添加 discussions 写入权限到 release 工作流

Author: WhiteElephant-abc

.github/workflows/release.yml

@@ -10,6 +10,7 @@ jobs:
     runs-on: ubuntu-24.04
     permissions:
       contents: write
+      discussions: write
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4