fix: use php-ci runner for deploy job instead of ubuntu-latest

- Changed deploy job to use php-ci runner which has Ansible pre-installed
- Removed redundant Ansible installation step
- Fixes 'ansible: command not found' error in Gitea Actions workflow

.gitea/workflows/production-deploy.yml

@@ -637,7 +637,6 @@ jobs:
           chmod 600 ~/.ssh/production
           ssh-keyscan -H ${{ env.DEPLOYMENT_HOST }} >> ~/.ssh/known_hosts
 
-      # Ansible is pre-installed in php-ci image
       - name: Verify Ansible installation
         run: ansible --version