🥸 use correct main branch name in gh actions yml

Author: jaka-k

.github/workflows/hetzner-deploy.yml

@@ -3,7 +3,7 @@ name: Deploy to Hetzner VPS
 on:
   push:
     branches:
-      - main
+      - master
 
 jobs:
   deploy:
@@ -22,5 +22,5 @@ jobs:
           port: 22
           script: |
             cd /home/app/multiagent-rag-system/
-            git pull origin main
+            git pull origin master
             docker compose -f docker-compose.prod.yml up -d --build