Refactor SSH credentials in astro.yml workflow

.github/workflows/astro.yml

@@ -11,12 +11,11 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
-
       - name: Execute remote SSH commands
         uses: appleboy/ssh-action@master
         with:
-          host: ${{ secrets.REMOTE_HOST }}
-          username: ${{ secrets.REMOTE_USER }}
-          key: ${{ secrets.REMOTE_SSH_KEY }}
+          host: ${{ secrets.HOST }}
+          username: ${{ secrets.USER }}
+          key: ${{ secrets.KEY }}
           script: |
             mkdir hallo