ci: assign online runner-79 tag to deployment jobs

.gitlab-ci.yml

@@ -10,6 +10,8 @@ stages:
 # 1. Preview Deployment (Tất cả các nhánh tính năng trừ staging, main)
 deploy_preview:
   stage: deploy
+  tags:
+    - runner-79
   except:
     - staging
     - main
@@ -26,6 +28,8 @@ deploy_preview:
 # 2. Production Deployment (Kích hoạt khi push lên nhánh staging, main)
 deploy_production:
   stage: deploy
+  tags:
+    - runner-79
   only:
     - staging
     - main