Change ssh agent version in deploy script

Author: David Mang

.github/workflows/deploy.yml

@@ -42,7 +42,7 @@ jobs:
       run: sudo apt-get update && sudo apt-get install -y openssh-client
 
     - name: Add SSH Key
-      uses: webfactory/ssh-agent@v0.8.1
+      uses: webfactory/ssh-agent@v0.5.3
       with:
         ssh-private-key: ${{ secrets.SSH_KEY }}