update gh action

Author: dtam

.github/workflows/server_ci.yml

@@ -4,13 +4,10 @@ on:
     push:
         branches:
             - main
-    pull_request:
-        branches:
-            - main
     workflow_dispatch:
 
 jobs:
-    build-test:
+    build-test-server:
         runs-on: ubuntu-latest
         steps:
             - name: Check out head