👷 CI: 修复发布机器人的意外错误 (#892)

* 🐛 fix permission error

* 👷 remove unnecessary push trigger

.github/workflows/publish-bot.yml

@@ -1,12 +1,9 @@
 name: NoneBot2 Publish Bot
 
 on:
-  push:
-    branches:
-      - master
   issues:
     types: [opened, reopened, edited]
-  pull_request:
+  pull_request_target:
     types: [closed]
 
 jobs: