Merge pull request #71 from BUAA-SE-coders007/fix/workflow

[fix]: deploy when push not pr

Author: coder0xe

.github/workflows/deploy.yml

@@ -1,7 +1,7 @@
 name: Deploy FastAPI Backend
 
 on:
-  pull_request:
+  push:
     branches:
       - main
       - dev